Charles & Colvard Announces U.S. Patent Office Upholds Patent after Re-Examination Request
Charles & Colvard, Ltd. (NASDAQ Global Select Market: CTHR), the sole manufacturer of created moissanite gemstones, The Most Brilliant Jewel in the World^®, today announced that the U.S. Patent and Trademark Office (the USPTO) upheld all claims under the Company's U.S. Patent No. 5,723,391 (the ‘391 Patent) covering its silicon carbide gemstones upon conclusion of an ex parte re-examination.
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