The result is a design that does not infringe Cisco's patent and is more efficient to boot.

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The New York-based drug giant filed a lawsuit last year in the U.S.District Court inDelaware, alleging both Cialis and Levitra infringe a recent Viagra "method-of-use" patent.

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The Web giant may have to take a step back, however, to deal with a California-based inventor who claims these services infringe on his patent.

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Macedo, claim to have developed a new process for making the fiber, which does not infringe on any Corning patent, at one-tenth Corning's costs.

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