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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 serves as an efficient and cost-effective alternative to litigation for disputing a patent's validity. It helps maintain the integrity of the patent system by ensuring that only patents meeting all legal standards remain in force, thereby balancing the rights of patent holders with the interests of the public and competitors.

  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. 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 ...

  9. Glossary of patent law terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_patent_law_terms

    A freedom-to-operate search is a search aimed at establishing whether a product or process is covered by patent rights, including patent and patent applications. If it does, commercially exploiting the product or process may lead to patent infringement. Freedom-to-operate analyses, opinions, and assessments are aimed at determining the risk of ...