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The Patent Garden

Nursery or breeding house

KLEMM & SOHN GMBH & CO KG

637 US plant patents, granted between 1987 and 2026.

On the name: these patents were filed under 10 spellings, counted together here — KLEMM & SOHN GMBH & CO KG (310), KLEMM SOHN GMBH & CO KG (234), KLEMM+SOHN GMBH & CO KG (63), KLEMM & SOHN (22), Klemm and Sohn GmbH and Co KG (9), KLEMM & SOHN GMBH & COMPANY KG (2), KLEMM & SOHN GMBH & KG (1), KLEMM & SOHN & GMBH & CO KG (1), KLEMM & SOHN & CO KG (1), KLEMM SOHN GMBH CO KG (1).

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

Still under patent — 534 cultivars

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

Already in the public domain — 103 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.