PCT Legal Texts

Access all PCT System legal and procedural texts.
Patent Cooperation Treaty [PDF ] (as in force from April 1, 2002)
Regulations under the PCT [PDF ] (as in force from January 1, 2026)
PCT Administrative Instructions [PDF ] (as in force from January 1, 2026) 
  • Annex A: Forms
  • Annex F:  Standard for Filing and Processing in Electronic Form
    • Main Body and  Appendices II - IV (as in force from July 1, 2022) [PDF]
    • Appendix I (as in force from July 1, 2022) [PDF]
PCT Receiving Office Guidelines [PDF ] (as in force from July 1, 2025) 
PCT International Search and Preliminary Examination Guidelines  [PDF ] (as in force from January 1, 2026) ​​​​​​​
Patent Cooperation Treaty (as in force until March 31, 2002) [PDF ]
Regulations under the PCT (as in force until December 31, 2025) [PDF ]
PCT Administrative Instructions (as in force until December 31, 2025) [PDF ]
  • Annex F:  Standard for Filing and Processing in Electronic Form
    • Main Body and  Appendices II - IV (as in force until June 30, 2022) [PDF]
    • Appendix I (as in force until June 30, 2022) [PDF]
PCT Receiving Office Guidelines (as in force until June 30, 2025) [PDF ]
PCT International Search and Preliminary Examination Guidelines (as in force until December 31, 2025) [PDF ]

Upcoming amendments

Amendments to the PCT Regulations (entry into force July 1, 2025) PCT/A/56/2, Annex I

Useful information

Regulations under the PCT

as in force from January 1, 2026 [PDF ]

PCT Administrative Instructions

Parts 1 - 8 and Annexes B to H
as in force from January 1, 2026 [PDF ]

PCT Receiving Office Guidelines

as in force from July 1, 2025 [PDF ]

PCT International Search and Preliminary Examination Guidelines

as in force from January 1, 2026 [PDF ]

Other languages

  • Trattato di cooperazione in materia di brevetti [PDF]
  • Regolamento d’esecuzione del Trattato di cooperazione in materia di brevetti
    • testo in vigore al 1º gennaio 2026  [PDF]
    • testo in vigore al 1º luglio 2025  [PDF]