Reinstatement of patent application meaning

Reinstatement of a patent application is the process for reviving a UK or Irish patent application that has been terminated or treated as withdrawn because a required step or time limit was missed (for example, paying a fee, requesting search or examination, or replying to an official action). In the UK it is a statutory mechanism under the Patents Act 1977 and Patents Rules (including s.20A), administered by the UKIPO; in Ireland, comparable relief exists under the Patents Act 1992 via the Intellectual Property Office of Ireland. Typically, the applicant must file a formal request (with a supporting statement explaining the failure), complete the outstanding act, and pay the prescribed fee within a strict window (in the UK, generally within 12 months). If granted, the application is treated as if not terminated, though third-party “intervening rights” may protect good‑faith activities that began during the period of lapse. Across England & Wales, Scotland and Northern Ireland practice is aligned under UK law. Ireland operates a separate but broadly similar procedure. Precise time limits, forms, evidential thresholds and the scope of any third‑party protections differ by jurisdiction and should be checked against current IPO guidance.