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blabla/PATSTAT/CPCSchemeXML202302/cpc-scheme-H04K.xml

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<?xml version="1.0" encoding="UTF-8"?>
<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="H04K" definition-exists="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>SECRET COMMUNICATION</text></title-part><title-part><text>JAMMING OF COMMUNICATION</text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>In this subclass, the following expression is used with the meaning indicated: <subnote type="bullet"><note-paragraph>&quot;secret communication&quot; includes secret line and radiation transmission systems, i.e. those in which apparatus at the transmitting station modifies the signal in such a way that the information cannot be intelligibly received without corresponding modifying apparatus at the receiving station.</note-paragraph></subnote></note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="H04K1/00" date-revised="2013-01-01" status="published"><classification-symbol>H04K1/00</classification-symbol>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="H04K1/00" definition-exists="true" ipc-concordant="H04K1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>H04K1/00</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Secret communication</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K1/003" definition-exists="false" ipc-concordant="H04K1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>H04K1/003</classification-symbol><class-title date-revised="2017-08-01"><title-part><CPC-specific-text><text>by varying carrier frequency at or within predetermined or random intervals </text><reference><text><class-ref scheme="cpc">H04K1/04</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K1/006" definition-exists="false" ipc-concordant="H04K1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K1/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by varying or inverting the phase, at periodic or random intervals</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K1/02" definition-exists="false" ipc-concordant="H04K1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>H04K1/02</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>by adding a second signal to make the desired signal unintelligible</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K1/025" definition-exists="false" ipc-concordant="H04K1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K1/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using an analogue chaotic signal</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K1/04" definition-exists="false" ipc-concordant="H04K1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K1/06" definition-exists="false" ipc-concordant="H04K1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>H04K1/06</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>by transmitting the information or elements thereof at unnatural speeds or in jumbled order or backwards</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K1/08" definition-exists="false" ipc-concordant="H04K1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by varying the polarisation of transmitted waves</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K1/10" definition-exists="false" ipc-concordant="H04K1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K1/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by using two signals transmitted simultaneously or successively</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="H04K3/00" definition-exists="true" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>H04K3/00</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Jamming of communication</text></title-part><title-part><text>Counter-measures</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K3/20" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Countermeasures against jamming </text><reference><text>in radar <class-ref scheme="cpc">G01S7/36</class-ref>; interference suppression in receivers <class-ref scheme="cpc">H04B1/10</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/22" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>including jamming detection and monitoring</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04K3/222" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/222</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>wherein jamming detection includes detecting the absence or impossibility of intelligible communication on at least one channel</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04K3/224" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/224</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with countermeasures at transmission and/or reception of the jammed signal, e.g. stopping operation of transmitter or receiver, nulling or enhancing transmitted power in direction of or at frequency of jammer</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04K3/226" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/226</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Selection of non-jammed channel for communication </text><reference><text>spectrum sharing arrangements <class-ref scheme="cpc">H04W16/14</class-ref>; selection of wireless resources by user or terminal <class-ref scheme="cpc">H04W72/02</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="H04K3/228" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/228</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Elimination in the received signal of jamming or of data corrupted by jamming </text><reference><text>interference suppression in receivers <class-ref scheme="cpc">H04B1/10</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/25" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/25</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>based on characteristics of target signal or of transmission </text><reference><text>as countermeasure against surveillance <class-ref scheme="cpc">H04K3/827</class-ref></text></reference><text>, e.g. using direct sequence spread spectrum or fast frequency hopping </text><reference><text>spread spectrum techniques <class-ref scheme="cpc">H04B1/69</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04K3/255" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/255</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>based on redundancy of transmitted data, transmission path or transmitting source</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/28" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with jamming and anti-jamming mechanisms both included in a same device or system, e.g. wherein anti-jamming includes prevention of undesired self-jamming resulting from jamming</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K3/40" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Jamming having variable characteristics</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/41" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/41</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterized by the control of the jamming activation or deactivation time </text><reference><text>control of jamming activation and deactivation time only for the purpose of alternating between jamming mode and target monitoring mode <class-ref scheme="cpc">H04K3/45</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04K3/415" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/415</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>based on motion status or velocity, e.g. for disabling use of mobile phones in a vehicle</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/42" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterized by the control of the jamming frequency or wavelength</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/43" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/43</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/44" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterized by the control of the jamming waveform or modulation type</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/45" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/45</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called &quot;look-through mode&quot;</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/46" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterized in that the jamming signal is produced by retransmitting a received signal, after delay or processing</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K3/60" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Jamming involving special techniques</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/62" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/62</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by exposing communication, processing or storing systems to electromagnetic wave radiation, e.g. causing disturbance, disruption or damage of electronic circuits, or causing external injection of faults in the information</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/65" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/65</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using deceptive jamming or spoofing, e.g. transmission of false signals for premature triggering of RCIED, for forced connection or disconnection to/from a network or for generation of dummy target signal</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/68" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/68</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using passive jamming, e.g. by shielding or reflection </text><reference><text>shielding of apparatus or components against electric or magnetic field <class-ref scheme="cpc">H05K9/00</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="H04K3/80" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/80</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Jamming or countermeasure characterized by its function</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/82" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/82</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>related to preventing surveillance, interception or detection</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04K3/822" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/822</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by detecting the presence of a surveillance, interception or detection</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04K3/825" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/825</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by jamming</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="H04K3/827" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/827</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using characteristics of target signal or of transmission </text><reference><text>as countermeasure against jamming <class-ref scheme="cpc">H04K3/25</class-ref></text></reference><text>, e.g. using direct sequence spread spectrum or fast frequency hopping </text><reference><text>spread spectrum techniques <class-ref scheme="cpc">H04B1/69</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/84" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/84</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>related to preventing electromagnetic interference in petrol station, hospital, plane or cinema</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/86" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/86</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>related to preventing deceptive jamming or unauthorized interrogation or access, e.g. WLAN access or RFID reading </text><reference><text>record carriers with integrated circuit chips including means for preventing undesired reading or writing from or to record carriers by hindering electromagnetic reading or writing <class-ref scheme="cpc">G06K19/07318</class-ref>; arrangements for sensing record carriers including arrangements for protecting the interrogation against piracy attacks <class-ref scheme="cpc">G06K7/10257</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/88" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/88</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>related to allowing or preventing alarm transmission</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/90" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/90</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>related to allowing or preventing navigation or positioning, e.g. GPS</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/92" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/92</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>related to allowing or preventing remote control</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="H04K3/94" definition-exists="false" ipc-concordant="H04K3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>H04K3/94</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>related to allowing or preventing testing or assessing</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="true" level="6" additional-only="true" sort-key="H04K203/00" date-revised="2013-01-01" status="published"><classification-symbol>H04K2203/00</classification-symbol>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="H04K203/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/00</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>Jamming of communication</text></title-part><title-part><text>Countermeasures</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04K203/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/10</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>Jamming or countermeasure used for a particular application</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04K203/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/12</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>for acoustic communication</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04K203/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/14</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>for the transfer of light or images, e.g. for video-surveillance, for television or from a computer screen</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04K203/16" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/16</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>for telephony</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04K203/18" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/18</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>for wireless local area networks or WLAN</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04K203/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/20</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>for contactless carriers, e.g. RFID carriers </text><reference><text>record carriers with integrated circuit chips including means for preventing undesired reading or writing from or to record carriers by hindering electromagnetic reading or writing <class-ref scheme="cpc">G06K19/07318</class-ref>; arrangements for sensing record carriers including arrangements for protecting the interrogation against piracy attacks <class-ref scheme="cpc">G06K7/10257</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04K203/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/22</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>for communication related to vehicles</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04K203/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/24</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>for communication related to weapons</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="H04K203/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/30</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>Jamming or countermeasure characterized by the infrastructure components</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04K203/32" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/32</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>including a particular configuration of antennas</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04K203/34" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/34</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>involving multiple cooperating jammers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="H04K203/36" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>H04K2203/36</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>including means for exchanging jamming data between transmitter and receiver, e.g. in forward or backward direction</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item></class-scheme>