Litigation summary

Known Litigation

Building on the summary previously provided, U.S. Patent No. 6,460,050 has been the subject of extensive and significant litigation. The patent was asserted by Intellectual Ventures I LLC against several major players in the cybersecurity industry. The primary legal battle unfolded in the U.S. District Court for the District of Delaware and was subsequently appealed to the U.S. Court of Appeals for the Federal Circuit (CAFC).

Below is a detailed list of the known legal cases involving this patent.

District Court Litigation

• Case Name: Intellectual Ventures I LLC v. Symantec Corp., et al.
• Plaintiff: Intellectual Ventures I LLC
• Defendants: Symantec Corp., Trend Micro Inc., and McAfee, Inc.
• Jurisdiction: U.S. District Court for the District of Delaware
• Case Numbers:
  • 1:10-cv-01067-LPS (Original action against Symantec)
  • 1:12-cv-01580-LPS (Action against McAfee)
  • 1:12-cv-01581-LPS (Action against Trend Micro and the lead number for the consolidated cases)
• Filing Dates: The initial case against Symantec was filed on December 6, 2010. The cases against McAfee and Trend Micro were filed on November 30, 2012, and were subsequently consolidated with the Symantec case.
• Outcome/Status: After a jury trial against Symantec where the jury did not find the patent invalid under §§ 102 or 103, the defendants filed motions for judgment on patent ineligibility under 35 U.S.C. § 101. On May 1, 2015, the district court granted summary judgment to the defendants, ruling that the asserted claims of U.S. Patent No. 6,460,050 were invalid because they were directed to the abstract idea of filtering content without an inventive concept.

Appellate Litigation

The district court's decisions were appealed to the U.S. Court of Appeals for the Federal Circuit (CAFC) in a series of related cases.

• Case Name: Intellectual Ventures I LLC v. Symantec Corp.

• Plaintiff-Appellant: Intellectual Ventures I LLC

• Defendants-Appellees: Symantec Corp., Trend Micro Inc.

• Jurisdiction: U.S. Court of Appeals for the Federal Circuit

• Case Numbers: 15-1770, 15-1769, 15-1771 (consolidated)

• Outcome/Status: On September 30, 2016, the CAFC affirmed the district court's ruling of invalidity. The court concluded that the patent claims were directed to the abstract idea of "receiving, screening, and distributing email," a long-prevalent real-world practice, and that implementing this idea on generic computers was not a sufficient inventive concept to warrant patent protection under 35 U.S.C. § 101. This decision is frequently cited in subsequent cases concerning software patent eligibility.

• Case Name: Intellectual Ventures I LLC v. Trend Micro Inc.

• Plaintiff-Appellant: Intellectual Ventures I LLC

• Defendants-Appellees: Trend Micro Inc., Trend Micro, Inc. (USA)

• Jurisdiction: U.S. Court of Appeals for the Federal Circuit

• Case Number: 19-1122

• Outcome/Status: This appeal related to the district court's award of attorneys' fees to Trend Micro after finding the case exceptional due to inconsistent testimony from the plaintiff's expert. In a decision on December 19, 2019, the CAFC vacated the fee award and remanded the case, instructing the district court to reconsider the award under the "totality of the circumstances."

These cases collectively represent a significant legal challenge to the validity and enforceability of U.S. Patent No. 6,460,050, culminating in a definitive appellate ruling that its key claims are invalid as a matter of law.