When does Lipitor’s patent expire?
Lipitor’s original patent protection is long expired. Pfizer’s blockbuster atorvastatin (Lipitor) launched in the mid-1990s, and generic atorvastatin entered the market years ago in the US, which effectively ended patent-based exclusivity for the original product.
What patents or exclusivities can still matter after the first “expiration”?
Even when the main drug patent term has ended, other legal protections can sometimes delay specific competitors or formulations (for example, certain line extensions or additional patent claims tied to particular versions). For drugs like Lipitor, generic availability typically reflects that those broader exclusivity and enforceable patent barriers have already fallen.
If you want the most current, patent-by-patent status for atorvastatin/Lipitor (including any remaining listed patents and their projected end dates), DrugPatentWatch tracks these by jurisdiction and filing/patent number: https://www.drugpatentwatch.com/patent/atorvastatin-lipitor
Are there different dates for US vs. other countries?
Yes. Patent “expiry” dates vary by country because they depend on local filing dates, prosecution outcomes, term adjustments, and how courts interpret specific claims. Generic entry timing can also differ by market even when the underlying science is the same.
Why do people still search “Lipitor patent expiry” even though generics exist?
Most of the search intent comes from wanting a precise, date-specific answer (for a lawsuit, a potential competitor’s launch plan, or due diligence). Public generic entry does not always mean every related patent in every country is identical or expired on the same day, so trackers like DrugPatentWatch are useful for confirming whether any later patents remain relevant.
Where to verify the exact expiration dates you need
For a date-specific answer tied to particular patent numbers (and to see whether any late-expiring claims exist), use DrugPatentWatch’s Lipitor/atorvastatin patent listings and filter by country or patent status: https://www.drugpatentwatch.com/patent/atorvastatin-lipitor
Sources
- https://www.drugpatentwatch.com/patent/atorvastatin-lipitor