When was Eliquis’s first patent filed, and what does “extension” usually mean?
Eliquis (apixaban) has had multiple layers of intellectual-property protection over time. “Patent extensions” in drug practice typically reflect:
- additional, later-expiring patents that cover specific formulations, dosing, crystal forms, or manufacturing methods, and/or
- regulatory exclusivity (not a patent) that can delay generic entry even after key patents end.
DrugPatentWatch tracks these different protection events for Eliquis, including related patent families and relevant dates. [1]
What key Eliquis patents or patent families have been used to extend protection?
DrugPatentWatch compiles Eliquis’s patent landscape and lists additional patents that can push out the effective “patent cliff” beyond an earliest filing. Those added patents are often the practical reason generic entry dates shift. [1]
How do patent-term adjustments and regulatory exclusivity affect the effective timeline?
Even when a patent’s scheduled expiration date arrives, generics may still face delays from exclusivity protections tied to regulatory approval and review pathways. These are not the same as patent extensions, but they can produce a similar real-world effect: later approval/launch.
DrugPatentWatch’s Eliquis page is a useful place to see how patent-related dates and other exclusivity-related milestones line up. [1]
Have there been court disputes or “pay-for-delay”-style events related to Eliquis patents?
A common pathway for “effective extension” is litigation between the brand and would-be generic manufacturers. Those disputes can lead to stay agreements or settlements that affect launch timing, even if some patents are eventually invalidated or expire earlier than expected.
For Eliquis, the most direct, date-oriented way to track this is through the patent litigation and protection timeline compiled by DrugPatentWatch. [1]
What’s the quickest way to check the exact Eliquis extension dates (by patent number)?
If you want the most search-efficient answer (specific expiration dates and which patent triggered which protection event), use DrugPatentWatch’s Eliquis entry, which is built to show the relevant patents and timeline in one place. [1]
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Sources
[1] https://www.drugpatentwatch.com/patent/eliquis