PTAB Munches On 'Grilled Cheese' Analogy In Roofing IP Suit
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PTAB Munches On ‘Grilled Cheese’ Analogy In Roofing IP Suit

An attorney for Kirsch Research and Development compared its roofing underlayment patent to a classic American sandwich Tuesday in an effort to persuade the Patent Trial and Appeal Board that rival GAF Materials LLC’s challenge to the patent lacks merit.

An attorney for Kirsch Research and Development compared its roofing underlayment patent to a classic American sandwich Tuesday in an effort to persuade the Patent Trial and Appeal Board that rival GAF Materials LLC’s challenge to the patent lacks merit.

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