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Patent Filing in Sri Lanka

Sri Lanka is a member of both PCT and Paris Convention. Patent application can be filed in Sri Lanka either by the route of PCT or by filing directly as a conventional application.

Term of patent: 20 years from the date of filing Patent Office: National Intellectual Property Office of Sri Lanka

 

Paradigm to obtain a patent in Sri Lanka:-
  • Filing of patent application
  • Preliminary examination
  • Publication of the application after 18 months from the filing date or first priority date.
  • Examination can be requested at any time within three years from the date of filing.
  • Compliance with the examiners office action within 90 days
  • Acceptance (Notice of Allowance) or rejection.
  • Payment of the Issue Fees.
  • Though the validity of a patent is 20 years, after 02 years of the application and if the patent is granted the annual fees (annuities) should be paid to the Patent Office in order to keep the patent valid. Grace period is only 06 months within which one can pay annuities with a surcharge.
Documents required for filing of Patent Application in Sri Lanka

1. PCT National Phase patent filing

  • WIPO publication
  • International search report
  • International preliminary examination report (chapter II)
  • Company’s copy of incorporation document with translation
  • Power of Attorney
  • Assignment if applicant is different from inventor

2. Conventional patent Filing

  • complete specification
  • formal drawing, if any
  • certified copy of the priority document
  • Statement of inventors, notarization not required
  • Company’s copy of incorporation document with translation
  • Power of Attorney, notarization not required
  • Assignment if applicant is different from inventor
Remarks:
  • Timeline for national phase entry in Sri Lanka is 30 months
  • Timeline for conventional filing in Sri Lanka is 12 months