Arena Retractable Roof Patents Invalid, Engineering Firm Says

By Matthew Guarnaccia (January 25, 2019, 5:25 PM EST) -- An engineering firm accused of infringing patents for retractable roof systems in relation to work on two U.S. Open tennis arenas shot back at the designer bringing the lawsuit, telling a New York federal judge Friday that the patents at issue are invalid and were initially awarded by deceiving the U.S. Patent and Trademark Office....

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