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The Patent Garden

Nursery or breeding house

POULSEN ROSER AS

547 US plant patents, granted between 1998 and 2026.

On the name: these patents were filed under 3 spellings, counted together here — POULSEN ROSER AS (504), POULSEN ROSER APS (41), Poulsen Roser AS (2).

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

Still under patent — 341 cultivars

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

Already in the public domain — 206 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.