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The district court found the asserted claims of U.S. Patent No. 6,073,142 to be ineligible for patenting under 35 U.S.C. § 101. The decision was subsequently appealed.
This was a multi-defendant litigation where claims against most defendants were eventually dismissed, following settlements or as a result of the § 101 invalidity finding in the separate Symantec case.
The Federal Circuit affirmed the district court's decision, holding that the asserted claims of U.S. Patent No. 6,073,142 were invalid because they were directed to the abstract idea of filtering email without adding an inventive concept.