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The Patent Garden

Genus

Parrotia

1 US plant patent has been granted in this genus. 0 are already in the public domain — anyone may propagate and sell them. The next of the 1 still protected comes off patent on April 12, 2036.

On the name: Filed as Parrotia. Now generally treated as a synonym under current taxonomy.

Still under patent — 1 cultivar

Soonest to come off patent first. You may not propagate these for sale until the date shown.

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.