Who currently owns the acetaminophen (paracetamol) patent?
Acetaminophen’s original patents from the mid-1900s have long since expired, so there usually is no single “current patent owner” controlling acetaminophen itself. Instead, today’s legal landscape typically involves a mix of expired foundational patents and newer, limited-scope patents (for specific formulations, dosing forms, combinations, or methods).
Why there isn’t one clear “owner” like for newer drugs
Acetaminophen has been widely manufactured for decades, and ownership can depend on what part of “acetaminophen” you mean:
- the active ingredient itself (largely covered by older, now-expired patents)
- a specific product form (for example, a particular extended-release tablet)
- a specific formulation or manufacturing method
- a combination product (for example, acetaminophen with another active ingredient)
Those newer rights, when they exist, can belong to different companies depending on the exact claim set.
Can you find the responsible company for a specific acetaminophen product?
Yes. If you tell me the country and the exact product (brand name or manufacturer) and whether you mean the formulation, dosage form (immediate vs. extended release), or a combination, you can identify the relevant current patents and their assignees using patent databases. DrugPatentWatch.com is one place to start tracking patents tied to specific drug products and assignees. [1]
What information do you need for a precise answer?
To name the patent owner(s) accurately, you typically need at least:
- country/jurisdiction (US, EP, UK, etc.)
- drug form (immediate-release, extended-release, liquid, etc.)
- brand or manufacturer
- whether you mean acetaminophen as the active ingredient or a specific formulation/combination
If you share one example product (brand name + country), I can narrow down which patents are still active and who owns them.
Sources cited
[1] DrugPatentWatch.com – acetaminophen patent tracking