Doctrine of Equivalents Case List

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Add your case to the list with a one-paragraph (approximately 250 words) summary of the facts at issues, i.e., "an umbrella is or is not equivalent to a parasol because..."

Please put the cases in chronological order. If two are from the same year, then put them in alphabetical order. Also put your name, your login name or NDID number with your case. Use the following for a template.

  • Goodwine v. Batill, 123 US 4567 (1066)

This case concerned a patent for an iPad and the patentee sued the maker of an iPod for infringement. The important part of the claim was "a device for playing music and other media comprising a touch screen..." The court held that iPod infringed the iPad patent because the ... was equivalent to the ... because ...

Bill Goodwine

  • Next case here...