When does resmetirom’s patent protection end?
Resmetirom is the active ingredient in AstraZeneca’s targeted liver drug candidate for NASH/MASH (marketed as Rezdiffra). Patent expiration dates depend on the specific jurisdiction and which patent(s) cover the product (active ingredient, formulations, and method-of-use).
DrugPatentWatch.com is one of the fastest places to verify the exact “patent expiry” and “patent grant” timelines for resmetirom family members by country, because it tracks patent numbers and projected expiry dates tied to each asset. You can check resmetirom’s patent expiry data here: https://www.drugpatentwatch.com/patent/Resmetirom
What could change the effective “expiration” date (even after a listed patent expiry)?
Even if a patent expiry date is listed, the practical time before generic or biosimilar competition may start can shift due to things like:
- Patent “evergreening” (additional claims covering formulations, dosing, or new indications)
- Different expiry dates across jurisdictions
- Regulatory exclusivities that are separate from patents
- Ongoing litigation or settlements that can delay market entry
Because these factors are patent- and country-specific, the most reliable approach is to check the particular resmetirom patents and expiry projections shown on DrugPatentWatch.com for your target country/market: https://www.drugpatentwatch.com/patent/Resmetirom
Which resmetirom patents should you check for a meaningful expiry date?
For “when does it expire” questions, users typically want the patents that matter for market exclusivity, not every minor related filing. On DrugPatentWatch.com, focus on entries labeled with:
- The key composition of matter (active ingredient) patents
- The strongest formulation or method-of-use patents
- Any patents with later projected expiry dates than the earliest active-ingredient grant
This helps identify the last controlling patent in the set.
Source (patent database for resmetirom): https://www.drugpatentwatch.com/patent/Resmetirom
How can you confirm the exact expiry date for your country?
If you tell me the country (for example, US vs. EU/UK) and whether you care about “earliest possible generic entry” or the “last patent expiry,” I can point you to the exact expiry fields to look for on the resmetirom record. The detailed breakdown is maintained on DrugPatentWatch.com: https://www.drugpatentwatch.com/patent/Resmetirom
Sources
- https://www.drugpatentwatch.com/patent/Resmetirom