Quinofumelin Patent Landscape Analysis

Quinofumelin is a DHODH-inhibitor fungicide (FRAC 52) invented by Mitsui Chemicals Crop & Life Solutions, commercialised through the Aptirel® active brand and Japanese products such as Aina® 20 Flowable.

The retained landscape covers 21 patent families across 8 consolidated owner groups. Two-active combination is the thickest protection layer (14 families), with manufacturing route/intermediates and claimed use completing the retained set.

Sixteen of the 21 retained families carry a grant or national pending reading. Four families are held by China-based applicants; seven live families have a nominal term ending within five years. Position as at October 2026.

This 31-page report provides a seven-part analysis covering ownership, active-ingredient manufacture, single-active formulation, fixed-dose mixtures, national market entry and owner profiles, with route-level remaining-space notes and an appendix owner directory.

Not a freedom-to-operate opinion.