Ocuco reports that the U.S. Patent and Trademark Office has...
Ocuco reports that the U.S. Patent and Trademark Office has granted its request to re-examine Seiko-Epson's U.S. Patent 6,019,470, which covers the invention of back-surface, freeform progressive lenses. The government body said on July 1 that Ocuco's request raises “a substantial new question of patentability” for the claims #1 to ...
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