SEATTLE, Wash. /CitizenWire/ — BetterThanDiamond, Inc., a privately held U.S. corporation, today announced it has filed a patent re-examination request with the U.S. Patent and Trademark Office regarding Charles & Colvard’s (NASDAQ:CTHR) patent for manufacturing ‘Silicon Carbide Gemstones.’ The patent in contention has allowed Charles & Colvard, Ltd. to enjoy a monopoly position and bill […]
