Valtrex patent expiration date?

Patents for Valtrex (valacyclovir) vary by country and by which patent (composition, use, formulation, etc.). The main US composition patent for valacyclovir has expired, and generic valacyclovir is available there; some other patents or pediatric exclusivities in certain regions may have extended protection for a few more years.

If you tell me the country/region you care about (US, EU, etc.), and whether you want the date for the main composition patent or all related patents, I can give you a more precise expiry date. I can also guide you on how to check the current status (e.g., USPTO Orange Book, Espacenet) if you’d like.