Nursery or breeding house
P C M OLSTHOORN HOLDING BV
9 US plant patents, granted between 2007 and 2023.
On the name: these patents were filed under 2 spellings, counted together here — P C M OLSTHOORN HOLDING BV (6), P C M OLSTHOORN HOLDING B V (3).
Still under patent — 6 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- 98216-59PP18570Spathiphyllum plant named ‘98216-59’UNDER PATENTOctober 13, 2026
- 98286-29PP18571Spathiphyllum plant named ‘98286-29’UNDER PATENTOctober 13, 2026
- 96411-10PP18672Spathiphyllum plant named ‘96411-10’UNDER PATENTOctober 13, 2026
- Sweet IsabellaPP33050Spathiphyllum plant named ‘Sweet Isabella’UNDER PATENTJune 19, 2040
- Sweet CatalinaPP34986Spathiphyllum plant named ‘Sweet Catalina’UNDER PATENTJune 19, 2040
- Sweet RominaPP35137Spathiphyllum plant named ‘Sweet Romina’UNDER PATENTJuly 4, 2041
Already in the public domain — 3 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.
- Sweet SilvanaPP18846Spathiphyllum plant named ‘Sweet Silvana’PUBLIC DOMAINJune 30, 2026
- Sweet RobertaPP18372Spathiphyllum plant named ‘Sweet Roberta’PUBLIC DOMAINMay 30, 2026
- Sweet SilvioPP18380Spathiphyllum plant named ‘Sweet Silvio’PUBLIC DOMAINMay 30, 2026