Tiffany Wins Challenge of LKI Diamond Inscription Patent

Tiffany & Co. filed an IPR of Lazare Kaplan International Inc.'s patent for laser-inscribing diamonds. On April 13, the PTAB issued a final written decision, ruling that both of the challenged claims in LKI's patent (U.S. Patent No. 6.476,351) were obvious in light of the prior art.

What the decision means for Tiffany is that it "can continue to use laser technology to inscribe unique and invisible-to-the-naked-eye serial numbers onto Tiffany diamonds," the jeweler said in a statement released via one of its attorneys, Wes Musselman of Fish & Richardson.

Read the article in National Jeweler here.