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The Patent Garden

Nursery or breeding house

KEISEI ROSE NURSERIES INC

33 US plant patents, granted between 1993 and 2025.

On the name: these patents were filed under 2 spellings, counted together here — KEISEI ROSE NURSERIES INC (32), Keisei Rose Nurseries (1).

Filed under the KEISEI name. Related entities are listed separately on the KEISEI search, because a company and a person are not the same filer even when the name matches.

Still under patent — 18 cultivars

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

Already in the public domain — 15 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.