Ivermectin patent owner?

Ivermectin’s key IP originally came from a collaboration between Satoshi Ōmura (Kitasato Institute) and Merck & Co. Merck owned the main patent family covering ivermectin (the ivermectin molecule, its use as an anti-parasitic, and early formulations). The basic compound patents have expired in most major markets, and generic versions are widely available.

That said, there can be active patents in specific areas such as:
- new uses or indications,
- particular formulations or delivery methods (e.g., veterinary pour-on or injectable forms),
- combination therapies,
- derivatives or improved variants.

Those newer patents, if any, may be owned by various companies in different jurisdictions.

If you’d like, tell me the country and what exactly you’re interested in (the basic drug, a specific use, or a veterinary formulation), and I can help outline the current status and how to look it up in patent databases (Google Patents, USPTO, Espacenet, WIPO Patentscope).