When does Truvada’s patent expire in Japan?
The exact expiry date for Truvada’s patent in Japan depends on which specific patent (and each patent’s separate life/term rules) is being asked about. Different patents can cover different parts of the product (for example, composition, formulation, or use), and each one can have a different end date in Japan.
What determines the Japan patent expiry date for Truvada?
In Japan, the end of patent protection can vary based on:
- Which patent family and which claim set is in force for Truvada in Japan.
- Whether the patentee received any term adjustments/extensions under Japanese rules (timing and eligibility vary by case).
- Whether the patent has been invalidated, narrowed, or is already expired in the relevant jurisdiction.
What you can check to get the precise expiry date
To identify the exact expiry date in Japan, you typically need the relevant Truvada patent numbers (from filings related to the drug substance/emtricitabine + tenofovir disoproxil fumarate). Those numbers can then be checked in Japan’s patent records for:
- The patent grant date (starting point for the term)
- Any adjustments/renewals that affect term length
- The current status (in force vs. expired vs. lapsed)
If you want, I can pin down the exact date
If you share either:
- the Japan patent number(s) you’re referring to, or
- the specific patent family/build (e.g., from a listing you saw),
I can help you determine the correct expiry date for that particular patent in Japan.
Sources
No sources were provided in the prompt, so I can’t cite a specific Japan expiry date for Truvada’s patent here.