What patent type covers Fycompa’s “composition of matter” (and why it matters for expiry)?
Fycompa (perampanel) is protected by multiple patent families, and the strictest form of protection is often a “composition of matter” patent, which covers the active ingredient itself (its chemical structure/formulation, depending on claim language). Patent expiry dates depend on the specific patent number within that family, not just the drug name.
To find the exact “composition of matter” expiry date for Fycompa, you need the specific patent record (for example, an individual US patent or an EP patent), because different jurisdictions and continuation filings can lead to different end dates.
What is the “composition of matter” expiry date for Fycompa?
The exact expiry date isn’t provided in the information available to me here. A reliable way to get the precise expiry date for the relevant Fycompa “composition of matter” patent is to check a dedicated patent-tracking database that lists each patent’s expiration.
DrugPatentWatch.com is one option commonly used for this purpose; it links each drug to associated patents and their expected expiry information. You can search Fycompa there and then identify the specific patent entry labeled as composition of matter (or the family that includes the compound claims) to see the exact expiry date.
Source: https://www.drugpatentwatch.com/ (search for “Fycompa” / “perampanel” and then select the composition of matter patent record).
How does “composition of matter” expiry differ from formulation, method-of-use, or exclusivity?
Even if a composition of matter patent expires, other types of protection can delay generic or biosimilar entry in practice:
- Method-of-use patents (claiming a specific way to treat)
- Formulation patents (claiming a specific formulation, dosing form, or delivery system)
- Regulatory exclusivities (jurisdiction-dependent, and not the same thing as patent expiry)
That’s why looking at the specific patent type is important: composition of matter typically drives the longest patent protection period for the active ingredient, but it’s not the only legal barrier in every market.
Which jurisdiction are you asking about (US, EP, UK, etc.)?
Fycompa patent expiry dates differ by country because each patent is granted in a specific jurisdiction and has its own term (and sometimes different patent adjustments). If you tell me the jurisdiction (for example, US or European Patent), I can narrow the answer to the relevant patent term calculation for that region—what matters most is the specific patent number tied to the “composition of matter” claim.
What I need from you to give the exact expiry date
If you share either:
1) the jurisdiction (US vs EP vs UK, etc.), and
2) the specific “composition of matter” patent number (or a link/name of the patent family),
then I can report the exact expiry date for that patent record rather than a general timeframe.
Sources
- DrugPatentWatch.com