US Plant Patent PP15512
Glenrock
Cherry tree named ‘Glenrock’
PUBLIC DOMAIN
Patent expired September 25, 2023. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on June 25, 2023. This patent earned 92 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP15512
- Filed
- June 25, 2003
- Granted
- February 1, 2005
- Expires
- September 25, 2023
- Inventor
- BRADFORD LOWELL GLEN
Abstract
The present invention relates to a cherry tree, Prunus avium , and more particularly to a new and distinct variety broadly characterized by a large size, vigorous, hardy, self-sterile, productive and regular bearing tree. The fruit matures under the ecological conditions described in late May, with first picking on May 24, 2003. The fruit is uniformly large in size, very sweet in flavor, oblate in shape, semi-freestone in type, firm in texture, yellow to red in flesh color, and dark red in skin color.
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 cherry tree, substantially as illustrated and described, that is most similar to the ‘Glenred’ (U.S. Plant Pat. No. 12,859) cherry by producing cherries that are large in size, oblate in shape, firm in texture, dark red in skin color, red in flesh color, and sweet in flavor, but is distinguished therefrom and an improvement thereon by blooming about three days later, by producing cherries that ripen about nine days later, and by being a pollinator for both the ‘Glenred’ and ‘Tulare’ (U.S. Plant Pat. No. 6,407) cherries.
Read the full patent: US Plant Patent PP15512 in full — the complete specification, every figure, and the file history.