US Plant Patent PP17718
EVIpo004
Clematis variety ‘EVIpo004’
PUBLIC DOMAIN
Patent expired March 1, 2026. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on January 31, 2023. This patent earned 1,125 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP17718
- Filed
- January 31, 2003
- Granted
- May 8, 2007
- Expires
- March 1, 2026
- Assignee
- RAYMOND J EVISON LTD
- Inventor
- EVISON RAYMOND J; OLESEN MOGENS N
Abstract
A new Clematis cultivar which is well suited to garden use. With a tall growth habit, profuse, nodding violet flowers, and continuous summer flowering. The variety successfully propagates from softwood cuttings and is suitable for ornamental use in outdoor settings in a variety of climatic conditions. This new and distinct variety has shown to be uniform and stable in the resulting generations from asexual propagation.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of clematis plant, substantially as herein shown and described, as a distinct and novel clematis variety due to its abundant, violet flowers, with good lastingness, attractive long lasting foliage and compact grwth, year round flowering under glasshouse conditions, suitability for production from softwood cuttings in pots, durable flowers, and foliage which makes the variety suitable for distribution in the floral industry.
Read the full patent: US Plant Patent PP17718 in full — the complete specification, every figure, and the file history.