Genus
Philadelphus
14 US plant patents have been granted in this genus. 1 is already in the public domain — anyone may propagate and sell it. The next of the 13 still protected comes off patent on December 26, 2026.
Still under patent — 13 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- STARBRIGHTPP18651Philadelphus plant named ‘STARBRIGHT’UNDER PATENTDecember 26, 2026
- Dainty LadyPP24536Philadelphus plant named ‘Dainty Lady’UNDER PATENTDecember 20, 2032
- RomanizamPP25303Philadelphus plant named ‘Romanizam’UNDER PATENTApril 23, 2033
- IcezamPP25565Philadelphus plant named ‘Icezam’UNDER PATENTMay 19, 2033
- IncsnozamPP26180Philadelphus plant named ‘Incsnozam’UNDER PATENTJuly 17, 2033
- SMNPVGPP31865Philadelphus plant named ‘SMNPVG’UNDER PATENTFebruary 14, 2039
- SMNPBDPP32395Philadelphus plant named ‘SMNPBD’UNDER PATENTNovember 5, 2039
- G15097PP32770Philadelphus plant named ‘G15097’UNDER PATENTJune 24, 2040
- SMNPVBPP34296Philadelphus plant named ‘SMNPVB’UNDER PATENTOctober 3, 2041
- P1PP35605Philadelphus plant named ‘P1’UNDER PATENTMarch 7, 2043
- W1PP35635Philadelphus plant named ‘W1’UNDER PATENTMarch 7, 2043
- ORSTPHILx1PP35914Philadelphus plant named ‘ORSTPHILx1’UNDER PATENTJune 26, 2043
- SMNPSDWPP35784Philadelphus plant named ‘SMNPSDW’UNDER PATENTAugust 30, 2043
Already in the public domain — 1 cultivar
Most recently freed first. Anyone may propagate and sell this plant — though the name it is sold under may still be a live trademark.
- Snowwhite FantasyPP13774Philadelphus plant named ‘Snowwhite Fantasy’PUBLIC DOMAINMay 31, 2022
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.