- ap => ["African Regional Industrial Property Organization", "Xi", "ARIPO"], # c-af
- bx => ["Benelux Office for Intellectual Property", "Xi", "BOIP"], # c-eu
- ef => ["European Community Patent Convention", "Xi", "CPC"], # c-eu
- em => ["European Trademark Office", "Xi", "OHIM"], # c-eu
- ep => ["European Patent Organization", "Xi", "EPOrg"], # c-eu
- ev => ["Eurasian Patent Organization", "Xi", "EAPO"], # c-as
- gc => ["Gulf Patent Office", "Xi", "GCCPO"], # c-as
- ib => ["International Bureau of WIPO", "Xi", "IB WIPO"],
- oa => ["African Intellectual Property Organization", "Xi", "OAPI"], # c-af
- wo => ["World Intellectual Property Organization", "Xi", "WIPO"],
+ ap => ["not used: African Regional Industrial Property Organization", "Xi", "ARIPO"], # c-af
+ bx => ["not used: Benelux Office for Intellectual Property", "Xi", "BOIP"], # c-eu
+ ef => ["not used: European Community Patent Convention", "Xi", "CPC"], # c-eu
+ em => ["not used: European Trademark Office", "Xi", "OHIM"], # c-eu
+ ep => ["not used: European Patent Organization", "Xi", "EPOrg"], # c-eu
+ ev => ["not used: Eurasian Patent Organization", "Xi", "EAPO"], # c-as
+ gc => ["not used: Gulf Patent Office", "Xi", "GCCPO"], # c-as
+ ib => ["not used: International Bureau of WIPO", "Xi", "IB"],
+ oa => ["not used: African Intellectual Property Organization", "Xi", "OAPI"], # c-af
+ wo => ["not used: World Intellectual Property Organization", "Xi", "WIPO"],
+
+ # common user-assigned
+ xa => ["user-assigned by Russia: Abkhazia", "c-az Co Xi", "Abkhazia", 'ge'], # also IC alias by CH
+ xo => ["user-assigned by Russia: South Ossetia", "c-az Co Xi", "South Ossetia", 'ge'],
+ xi => ["user-assigned for UK/EU trade: Northern Ireland", "c-eu Co Xi", "Northern Ireland", 'gb'],
+ xn => ["user-assigned by WIPO: Nordic Patent Institute", "c-eu Co Xi", "Nordic", 'dk is no se'],
+ xu => ["user-assigned by WIPO: international org UPOV", "Co Xi", "UPOV"],
+ xv => ["user-assigned by WIPO: Visegrad Patent Institute", "c-eu Co Xi", "Visegrad", 'cz hu pl sk'],
+ xx => ["user-assigned by WIPO: unknown state or other entity", "Co Xi", "other"],
+ xz => ["UN/LOCODE semantics: international waters", "Co Xi", "international"],
+ qm => ["user-assigned by ISRC: United States alternative", "c-na Co Xi", "USA"],
+ qo => ["Unicode semantics: Outlying Oceania", "c-oc Co Xi", "Oceania"],
+ qu => ["Unicode semantics: European Union deprecated reserve", "c-eu Co Xi", "EU", 'eu'],
+ zz => ["Unicode semantics: unknown or invalid territory", "Co Xi","unknown"],
+ oo => ["escape to indicate additional code", "Co Xi", "escape"],