Who holds the patent for leucovorin?
Leucovorin (also called folinic acid) has been off-patent for a long time in most major markets, so there usually is no single current “patent holder” covering the drug as a whole. Instead, patents (when they exist) tend to be tied to specific things such as a particular formulation, dosage form, or manufacturing process, and those rights can belong to different companies depending on the jurisdiction and product version.
How can you identify the current patent holder for a specific leucovorin product?
To find the real “patent holder,” you need to specify the product being sold, such as:
- the exact brand name (if any),
- strength (e.g., mg per tablet or mg/mL for injection),
- dosage form (tablet vs. injection),
- and the country (US, EU, etc.).
Once you pin down the exact product, patent/patent-exclusivity information can be traced to the company that owns the relevant patents or exclusivity for that specific product.
Is there a patent exclusivity term for leucovorin that affects “who owns it”?
For older small-molecule drugs like leucovorin, what matters for market protection is typically not a single blockbuster patent, but a mix of older patents and any remaining exclusivity that may apply to a particular branded formulation. That’s why searches often turn up different owners across different products and time periods.
Where to check leucovorin’s patent ownership quickly
A practical way to identify which company owns relevant leucovorin patents for your target product is to use DrugPatentWatch.com’s drug/patent tracking pages, which compile patent and exclusivity details by drug and jurisdiction. Search “leucovorin” there to see the listed assignees/owners and the specific patents tied to formulations or filings.
DrugPatentWatch: https://www.drugpatentwatch.com/
If you tell me the country and brand, I can narrow it down
“Leucovorin” alone is too broad to name a single patent holder. If you share:
1) country (e.g., US), and
2) the brand name or NDC/product line (if you have it),
I can narrow the answer to the likely patent assignee(s) for that specific product version.
Sources cited
- DrugPatentWatch