Case Name: Zen Design Group, Limited v. Hot Focus, Inc.
Docket Number: 4:2012-cv-12659-MAG-RSW      
Date Filed: 6/18/2012
Judge: Hon. Mark A. Goldsmith
Status: Closed

Zen Design Group, Ltd. filed suit against Hot Focus for patent infringement of U.S. Patent No. 6,860,616 entitled, “Ultraviolet Light Writing System.” The patent generally relates to a writing system containing an ink or dye that shines in the visible portion of the light spectrum when exposed to ultraviolet light. Specifically, Zen Design alleged that Hot Focus sold its product “Secret Message, Invisible Writing Pen” without its consent and in violation of its patent. However, on October 22, 2012, Plaintiff voluntarily dismissed its claims with prejudice against the defendant.