PCT/AI/DTD/2 page 291 <!ELEMENT ipc-version-indicator (date)> <!-Patent family and corresponding-docs --> <!ELEMENT corresponding-docs (document-id | nplcit)*> <!ELEMENT applicability-not-valid (claim-num*)> <!ELEMENT applicability-valid (claim-num*)> <!ELEMENT inventive-step-not-valid (claim-num*)> <!ELEMENT inventive-step-valid (claim-num*)> <!ELEMENT novelty-not-valid (claim-num*)> <!ELEMENT novelty-valid (claim-num*)> <!-(PCT/IPEA/409) Box No.
--> <!ELEMENT symbol-position (#PCDATA)> <!ELEMENT subgroup (#PCDATA)> <!ELEMENT main-group (#PCDATA)> <!ELEMENT subclass (#PCDATA)> <!ELEMENT section (#PCDATA)> <!-Levels: ipcr-advanced, ipcr-core --> <!ELEMENT classification-level (#PCDATA)> <!ELEMENT ipc-version-indicator (date)> <!-Patent family and corresponding-docs --> <!ELEMENT corresponding-docs (document-id | nplcit)*> <!ELEMENT applicability-not-valid (claim-num*)> <!ELEMENT applicability-valid (claim-num*)> <!ELEMENT inventive-step-not-valid (claim-num*)> <!ELEMENT inventive-step-valid (claim-num*)> <!ELEMENT novelty-not-valid (claim-num*)> <!ELEMENT novelty-valid (claim-num*)> <!-(PCT/IPEA/409) Box No.