Patent 5987610
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
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No PTAB proceedings on file. This patent has not been challenged through Inter Partes Review, Post-Grant Review, or Covered Business Method review at the USPTO. The absence is itself a signal — well-asserted patents eventually attract IPRs.
Cases on file (2)
Group view →Specific litigation cases in our database that name US patent 5987610. The free-form analysis below may also discuss cases beyond this list.
- Intellectual Ventures I LLC v. Symantec Corp.filed Dec 8, 20101:10-cv-01067-LPSU.S. District Court for the District of Delawareterminated Sep 30, 2016Reversed on appeal
Defendants: Symantec Corp.
- Intellectual Ventures I LLC v. Trend Micro Incorporated et al.filed Dec 8, 20101:12-cv-01581-LPSU.S. District Court for the District of DelawareClaims withdrawn
Defendants: Trend Micro Incorporated and Trend Micro, Inc. (USA)
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
As of April 26, 2026, US patent 5,987,610 has been the subject of significant litigation. The primary lawsuits involved the patent's owner, Intellectual Ventures I LLC, as the plaintiff, and technology companies Symantec Corp. and Trend Micro Inc. as defendants.
Intellectual Ventures I LLC v. Symantec Corp.
- Plaintiff: Intellectual Ventures I LLC
- Defendant: Symantec Corp.
- Jurisdiction: U.S. District Court for the District of Delaware; U.S. Court of Appeals for the Federal Circuit
- Case Number: 1:10-cv-01067-LPS (District Court)
- Filing Date: The original complaint was filed on December 8, 2010.
- Outcome/Status: In the initial district court proceedings, a jury found that Symantec had infringed claim 7 of the '610 patent, and the court entered a final judgment of $8 million in favor of Intellectual Ventures. However, on September 30, 2016, the U.S. Court of Appeals for the Federal Circuit reversed the district court's decision regarding the '610 patent. The Federal Circuit held the asserted claim of the patent invalid for being directed to patent-ineligible subject matter under 35 U.S.C. § 101.
Intellectual Ventures I LLC v. Trend Micro Inc. et al.
- Plaintiff: Intellectual Ventures I LLC
- Defendants: Trend Micro Incorporated and Trend Micro, Inc. (USA)
- Jurisdiction: U.S. District Court for the District of Delaware; U.S. Court of Appeals for the Federal Circuit
- Case Numbers: 1:12-cv-01581-LPS (District Court, after being severed from the Symantec case); 1:10-cv-01067-LPS (Federal Circuit appeal, along with Symantec)
- Filing Date: The case against Trend Micro was part of the original 2010 lawsuit and was severed on November 21, 2012.
- Outcome/Status: Intellectual Ventures initially asserted the '610 patent against Trend Micro but later voluntarily withdrew the infringement claims related to this specific patent in the district court case. The litigation continued over other patents. The Federal Circuit's 2016 ruling that invalidated the '610 patent in the Symantec appeal also applied broadly, confirming its ineligibility. Following the appeal, the district court ordered Intellectual Ventures to reimburse Trend Micro for a portion of its legal fees due to litigation conduct in the broader case.
Generated 5/11/2026, 12:09:58 AM