The EPO published EP3920902A1, a patent application for a therapeutic composition using butyric acid for the treatment of piscirickettsiosis (A61P 31/04 - anti-infectives), a significant disease in salmonid aquaculture. Applicant Nutrition Sciences N.V. claims compositions suitable for incorporation into fish feed (A23K 50/80) with inventors Bruggeman and Bruger. The application covers both the composition itself and its use in treating the bacterial infection in fish farming operations (A01K 61/13).

This is a patent publication, not a regulatory requirement. No compliance actions are needed from pharmaceutical or aquaculture companies. Parties interested in the technology should monitor the patent prosecution timeline and consider freedom-to-operate analysis if developing competing products. The designated states include all major EU countries plus Norway, Switzerland, and other European states.