Plant
Maitake mushroom
3 US plant patents name this plant. 0 have expired, so those cultivars are free to propagate and sell. The next of the 3 still protected comes off patent on June 15, 2033.
Still under patent — 3 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Grifon-7PP25856Maitake mushroom named ‘Grifon-7’UNDER PATENTJune 15, 2033
- Grifon-8goPP33127Maitake mushroom named ‘Grifon-8go’UNDER PATENTSeptember 23, 2039
- YUKIGUNIMAI 14GOPP35254Maitake mushroom named ‘YUKIGUNIMAI 14GO’UNDER PATENTFebruary 28, 2042
Botanically this is Grifola. A patent expiring frees the plant, and its cultivar name with it — cultivar names cannot be trademarked. Any brand name it is sold under is a separate thing and may still be owned.