Genus
Paeonia
28 US plant patents have been granted in this genus. 7 are already in the public domain — anyone may propagate and sell them. The next of the 21 still protected comes off patent on January 25, 2028.
Still under patent — 21 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Singing in the rain IIPP19374Paeonia plant named ‘Singing in the rain II’UNDER PATENTJanuary 25, 2028
- Smith Opus 1PP22192Paeonia plant named ‘Smith Opus 1’UNDER PATENTSeptember 9, 2030
- Smith Opus 2PP22374Paeonia plant named ‘Smith Opus 2’UNDER PATENTSeptember 9, 2030
- HR 01PP24048Paeonia plant named ‘HR 01’UNDER PATENTMarch 15, 2032
- RTPIV789-06PP26908Paeonia plant named ‘RTPIV789-06’UNDER PATENTJuly 31, 2034
- RTPIV791-38PP26909Paeonia plant named ‘RTPIV791-38’UNDER PATENTAugust 19, 2034
- RTPIV790-01PP26907Paeonia plant named ‘RTPIV790-01’UNDER PATENTSeptember 11, 2034
- RTPIV791-09PP29338Paeonia plant name ‘RTPIV791-09’UNDER PATENTJanuary 19, 2037
- RTPIV791-01PP29358Paeonia plant named ‘RTPIV791-01’UNDER PATENTJanuary 19, 2037
- RTPIV 789-03PP32147Peony plant named ‘RTPIV 789-03’UNDER PATENTDecember 9, 2039
- RTPIV 849-01PP33909Peony plant named ‘RTPIV 849-01’UNDER PATENTJune 7, 2041
- RTPIV 849-04PP33910Peony plant named ‘RTPIV 849-04’UNDER PATENTJune 7, 2041
- Smithopus7PP36810Paeonia plant named ‘Smithopus7’UNDER PATENTDecember 3, 2044
- Smithopus10PP36924Paeonia plant named ‘Smithopus10’UNDER PATENTDecember 3, 2044
- Smithopus5PP37003Paeonia plant named ‘Smithopus5’UNDER PATENTDecember 3, 2044
- Smithopus6PP37004Paeonia plant named ‘Smithopus6’UNDER PATENTDecember 3, 2044
- Smithopus8PP36962Paeonia plant named ‘Smithopus8’UNDER PATENTDecember 12, 2044
- Smithopus3PP37005Paeonia plant named ‘Smithopus3’UNDER PATENTDecember 12, 2044
- Smithopus4PP37216Paeonia plant named ‘Smithopus4’UNDER PATENTJuly 9, 2045
- Smithopus12PP37385Paeonia plant named ‘Smithopus12’UNDER PATENTJuly 9, 2045
- Smithopus11PP37425Paeonia plant named ‘Smithopus11’UNDER PATENTJuly 9, 2045
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.
- Peony plantPP5718PUBLIC DOMAINJuly 30, 2004
- AmericaPP4246Peony plant named AmericaPUBLIC DOMAINMay 2, 1995
- Coral CharmPP4247Peony plant named Coral CharmPUBLIC DOMAINMay 2, 1995
- Cheddar GoldPP4248Peony named Cheddar GoldPUBLIC DOMAINMay 2, 1995
- Bridal IcingPP4249Peony plant named Bridal IcingPUBLIC DOMAINMay 2, 1995
- My Pal RudyPP4233Peony plant named My Pal RudyPUBLIC DOMAINApril 4, 1995
- whopperPP4234Peony named whopperPUBLIC DOMAINApril 4, 1995
A patent expiring frees the plant, and its cultivar name comes with it — cultivar names cannot be trademarked, so they are always free to use. What it does not free is any brand name the plant is marketed under. Those are trademarks and renew indefinitely.