Useful lists - PCT

You can download the document in a compact, printable pdf for the EQE below.

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International Searching Authorities (ISA) and International Preliminary Examining Authorities (IPEA)

Basis: PCT Applicant's Guide
The links below will open the Agreement between the office and the WIPO.

Offices in Europe are in bold; EPO will only act as IPEA if ISA was one of these offices.
The exception of the EPO not performing a supplementary search in the EP phase only applies if EPO was ISA or SISA (OJ 2009, 594). The exception does not apply when another European office (e.g. Spanish office) was the ISA and the EPO was the IPEA.

AT - Austrian Patent Office

AU - Australian Patent Office

BR- National Institute of Industrial Property (Brazil)

CA- Canadian Intellectual Property Office

CL - National Institute of Industrial Property of Chile

CN - China National Intellectual Property Administration (CNIPA)

EG - Egyptian Patent Office

EP - European Patent Office (EPO)

ES - Spanish Patent and Trademark Office

FI - Finnish Patent and Registration Office (PRH)

IL - Israel Patent Office

IN - Indian Patent Office

JP - Japan Patent Office

KR - Korean Intellectual Property Office

PH - Intellectual Property Office of the Philippines

RU - Federal Service for Intellectual Property, Patents and Trademarks (Russian Federation)

SE - Swedish Intellectual Property Office (PRV)

SG - Intellectual Property Office of Singapore

TR - Turkish Patent and Trademark Office

UA - Ministry for Development of Economy, Trade and Agriculture of Ukraine, Department for Development of Intellectual Property

US - United States Patent and Trademark Office (USPTO)

XN - Nordic Patent Institute

XV - Visegrad Patent Institute

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SISA (International Searching Authorities for Supplementary Search)

Basis: PCT Applicant's Guide; the links below will open the Annexes of each SISA

AT - Austrian Patent Office

EP - European Patent Office (EPO)

FI - Finnish Patent and Registration Office (PRH)

RU - Federal Service for Intellectual Property, Patents and Trademarks (Russian Federation)

SE - Swedish Intellectual Property Office (PRV)

SG - Intellectual Property Office of Singapore

TR - Turkish Patent and Trademark Office

UA - Ministry for Development of Economy, Trade and Agriculture of Ukraine, Department for Development of Intellectual Property

XN - Nordic Patent Institute

XV - Visegrad Patent Institute

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PCT publication languages

Basis: R.48.3 and Art.21(4) PCT

• Arabic

• Chinese

• English

• French

• German

• Japanese

• Korean

• Portuguese

• Russian

• Spanish

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IP5 offices

• EPO (European Patent Office)

• JPO (Japan)

• KIPO (South Korea)

• CNIPA (former SIPO) (China)

• USPTO (USA)

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