Plant
Mushroom
10 US plant patents name this plant. 7 have expired, so those cultivars are free to propagate and sell. The next of the 3 still protected comes off patent on October 8, 2028.
Still under patent — 3 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Grifon 120PP21575Mushroom plant named ‘Grifon 120’UNDER PATENTOctober 8, 2028
- PLE-3PP23210Mushroom named ‘PLE-3’UNDER PATENTOctober 6, 2029
- ALLERPOPP32864Mushroom plant named ‘ALLERPO’UNDER PATENTOctober 22, 2039
Already in the public domain — 7 cultivars
Most recently freed first. Anyone may propagate and sell these plants — though the name it is sold under may still be a live trademark.
- SpoppoPP18037Mushroom variety named ‘Spoppo’PUBLIC DOMAINJuly 7, 2025
- Hokuto NT-100PP17984Mushroom named ‘Hokuto NT-100’PUBLIC DOMAINFebruary 13, 2025
- BroncohPP17396Mushroom variety named ‘Broncoh’PUBLIC DOMAINJuly 25, 2024
- Brown Hybrid X618PP7636Mushroom plant named Brown Hybrid X618PUBLIC DOMAINJune 8, 2009
- Pleurotus ostreatus kummeriPP7105Mushroom plant, Pleurotus ostreatus kummeriPUBLIC DOMAINSeptember 26, 2008
- Mushroom plantPP5772PUBLIC DOMAINOctober 19, 2004
- Mushroom plantPP5773PUBLIC DOMAINOctober 19, 2004
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.