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Koss Soars After Apple Rebuffed in Patent Challenges

Oct. 12, 2021, 8:08 PM

Koss Corp. jumped the most since June after the Patent Trial and Appeal Board declined to institute reviews of two of its patents challenged by Apple Inc.

  • Koss rose 23% before trading paused for volatility; finished up 25%
  • Apple had not met its burden to generate a review of patents 10,491,982 and 10,506,325, the review board said
  • Apple had to show at least a “reasonable likelihood” of winning its claims that the patents, for wireless earphones and headphones, didn’t cover new inventions
  • Koss has sued Apple and other companies, accusing them of infringing the patents
  • NOTE: PTAB has instituted reviews of other Koss patents

To contact the reporter on this story:
Susan Decker in Washington at

To contact the editors responsible for this story:
Jon Morgan at

John McCorry

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