Presstek Alleges Patent Infringement
HUDSON, N.H. -- HUDSON, N.H. -- Presstek Inc., a maker of laser-based computer-to-press print heads, has notified Creo Products Inc. of Burnaby, British Columbia, Canada, that it is infringing Presstek’s patents covering on-press imaging of printing plates. Presstek has not filed suit, but the dispute has been brewing since Creo asked the US Patent and Trademark Office to re-examine one of the patents. A second Presstek patent was re-examined after an anonymous request. The patent infringement...