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ARTICLE · 05 MAY 2023

Reaching New Lights: Inherent Upper Limit Enables Open-Ended Range

McDermott Will & Emery
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The US Court of Appeals for the Federal Circuit affirmed an International Trade Commission decision finding a § 337 violation.

United StatesIntellectual Property
Amol Parikh
Amol Parikh

The US Court of Appeals for the Federal Circuit affirmed an International Trade Commission decision finding a § 337 violation. The Court concluded that the Commission correctly found that an open-ended claim was enabled since there was an inherent upper limit and correctly construed the term "a" to mean "one or more" in finding infringement. FS.com Inc. v. International Trade Commission, Case No. 22-1228 (Fed. Cir. Apr. 20, 2023) (Moore, Prost, Hughes, JJ.)

Corning Optical Communications owns several patents directed to fiber optic technology. Corning alleged that FS violated § 337 by importing high-density fiber optic equipment that infringed the patents. In assessing infringement, the Commission construed the claim term "a front opening" to mean "an opening located in the front side of a fiber optic module (e.g., the opening depicted in Figure 13 of the [asserted] patent as having dimensions H1 and W1") and further concluded that the term encompassed one or more

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