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Patents in Sri Lanka

Sri Lanka is member of both Paris Convention as well as PCT, therefore, it is possible to file Conventional Patent Application as well as PCT national phase Application in Sri Lanka. The time frame of filing PCT National Phase in Sri Lanka is 30 months from date of earliest priority. For Conventional filing the deadline for filing application is 12 months from date of earliest priority.

Patent filing requirements in Sri Lanka

  1. Name, address and nationality of the Applicant (s).
  2. Name, address and nationality of the Inventor(s).
  3. Complete Specification in English (comprising description, claims, abstract, formal drawings)
  4. Details of priority applications (priority number, date and country of origin); Certified copy of priority document (within 3 months of filing of Application)
  5. A verified/notarised English translation of the priority document, if in any language other than English
  6. Statement justifying the Applicant’s rights to the patent, if applicant is different from inventor.
  7. Power of Authority (executed in presence of two witnesses, notarisation or legalisation not required)

Various Stages of Patent prosecution in Sri Lanka:

  1. Filing of Patent Application
  2. Preliminary Examination
  3. Publication of Patent Application in around 18 months from priority date
  4. Acceptance or rejectionIssuance of Letter Patent document
  5. Payment of renewal fee to keep the Patent in force

Term of Patent/  Renewal of Patent in Sri Lanka:

The total term of Patent is only 20 years.

Recent Activity

Date : November 09, 2019
Location: Taipei, Taiwan

APAA 70th Council Meeting

70th Council Meeting of Asian Patent Attorneys Association was held in Taipei, Taiwan from November 9 to November 12, 2020

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Aswal Associates A full-service Intellectual Property firm; Patent and Trademark Attorney in India; Best Patents Law Firms in India; IP Law Firms in India, Patent and Trademark attorneys in India; Patent law firms in India; India - Best Law Firms for Patent Prosecution & Litigation; Top Patent Lawyers in India - 2023; Top Indian Law Firms With An IPR Practice;