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  2. Patent opposition proceedings - Wikipedia

    en.wikipedia.org/wiki/Patent_opposition_proceedings

    Timeframes for filing opposition: The period during which an opposition can be filed may commence immediately after the publication of the patent application, after a positive examination result, or following the grant of the patent. The duration of this period varies, typically ranging from two to six months for pre-grant oppositions and six ...

  3. Opposition proceeding - Wikipedia

    en.wikipedia.org/wiki/Opposition_proceeding

    An opposition proceeding is an administrative process available under the patent and trademark law of many jurisdictions which allows third parties to formally challenge the validity of a pending patent application ("pre-grant opposition"), of a granted patent ("post-grant opposition"), or of a trademark.

  4. Patent prosecution - Wikipedia

    en.wikipedia.org/wiki/Patent_prosecution

    Post-grant opposition occurs after a patent has been granted, providing a window during which third parties [17] can contest the validity of the patent. [25] This procedure allows challengers to present arguments and evidence to the patent office , aiming to revoke or amend the granted patent if it is found to lack novelty, inventive step, or ...

  5. Opposition procedure before the European Patent Office

    en.wikipedia.org/wiki/Opposition_procedure...

    Article 99(1) EPC, i.e. a notice of opposition must be filed by a natural or legal person within nine months from the publication of the mention of grant of the European patent in the European Patent Bulletin (the start of the nine-month opposition period depends on the publication of the mention of grant of the European patent in the European ...

  6. Limitation and revocation procedures before the European ...

    en.wikipedia.org/wiki/Limitation_and_revocation...

    The EPC of 1973 made no provision for a limitation procedure, [6] and a fortiori no provision for centrally limiting a European patent before the EPO after the nine-month period for filing an opposition (nine months as from the date of grant of the European patent). The travaux préparatoires laid out the rationale for a limitation procedure:

  7. Leahy–Smith America Invents Act - Wikipedia

    en.wikipedia.org/wiki/Leahy–Smith_America...

    Named for its lead sponsors, Sen. Patrick Leahy (D–VT) and Rep. Lamar Smith (R–TX), [2] the Act switches the U.S. patent system from a "first to invent" to a "first inventor to file" system, eliminates interference proceedings, and develops post-grant opposition. Its central provisions went into effect on September 16, 2012 and on March 16 ...

  8. United States patent law - Wikipedia

    en.wikipedia.org/wiki/United_States_patent_law

    Under United States law, a patent is a right granted to the inventor of a (1) process, machine, article of manufacture, or composition of matter, (2) that is new, useful, and non-obvious. A patent is the right to exclude others, for a limited time (usually, 20 years) from profiting from a patented technology without the consent of the patent ...

  9. European Patent Convention - Wikipedia

    en.wikipedia.org/wiki/European_Patent_Convention

    The opposition procedure, governed by the EPC, allows third parties to file an opposition against a European patent within 9 months of the date of grant of that patent. [54] It is a quasi-judicial process, subject to appeal, which can lead to maintenance, maintenance in amended form or revocation of a European patent. Simultaneously to the ...