The catalog

Patent invalidity dossiers.

1,809 patents in the database, sorted by number of on-file litigation cases. Of these, 1,391 have at least one tracked case across 3,023 litigations.

Demand letter analyzer

You got a patent demand letter. Now what?

Paste the letter — we extract the asserted patents, identify the asserter, characterize their litigation history, flag validity vulnerabilities, and draft a sample response letter your attorney can review. Free, private, ~2-3 minutes.

Analyze a letter →

Analyze a patent

Drop a US patent number — we’ll verify it on Google Patents and generate the full invalidity dossier.

By industry

  • A concise summary of US Patent 12377204 is as follows: Title: System and method for collecting plasma Assignee: Haemonetics Corp Inventor: Michael Ragusa Filing Date: March 12, 2025 Issue Date: August 5, 2025 Abstract: A method for…

    View full analysis →added 5/12/2026
  • Summary of U.S. Patent 12,417,756 As of the current date, April 30, 2026, the following is a summary of United States Patent number 12,417,756. This information is based on the authoritative patent text. A search of the United States Court…

    View full analysis →added 4/30/2026
  • An analysis of United States Patent 5,841,978, focusing on its key details and claims, is provided below. A search of the United States Court of Appeals for the Federal Circuit (CAFC) dockets for the year 2026 was conducted, and no cases…

    View full analysis →added 4/28/2026
  • A concise summary of US Patent 5,987,610, including a plain-language overview of its independent claims, is provided below. This analysis is based on the patent text and relevant legal proceedings as of the current date. Summary of US…

    View full analysis →added 5/10/2026
  • Patent Summary: US 6,266,674 Date of Analysis: April 26, 2026 This report provides a summary of United States Patent 6,266,674, including its prosecution history, claims, and legal status. Title: Random access information retrieval…

    View full analysis →added 5/10/2026
  • Patent Analysis: US 6460050 B1 Date of Analysis: May 11, 2026 Summary Title: Distributed content identification system Assignee: As of the latest assignment records, the patent is assigned to Intellectual Ventures I LLC. The original…

    View full analysis →added 5/10/2026
  • A concise summary of US Patent 6,963,505 is as follows: Title: Method circuit and system for determining a reference voltage Assignee: The original assignee was Aifun Semiconductors Ltd. The current assignee of record is Spansion Israel…

    View full analysis →added 5/13/2026
  • A summary of US Patent 7,020,281, which is now expired, is provided below. A search of the United States Court of Appeals for the Federal Circuit (CAFC) 2026 dockets for this patent number did not yield any results. Summary of US Patent…

    View full analysis →added 4/30/2026
  • Here is a concise summary of US patent 7061859: Title: Fast protection in ring topologies Current Assignee: Quicker Connections LLC Inventors: Yossi Barsheshet Filing Date: August 30, 2001 Issue Date: June 13, 2006 Abstract: In a…

    View full analysis →added 5/14/2026
  • Analysis of U.S. Patent No. 7,154,961 Date of Analysis: April 28, 2026 This report provides a summary of United States Patent No. 7,154,961, including its bibliographic details and a plain-language explanation of its independent claims…

    View full analysis →added 4/27/2026
  • Summary of U.S. Patent 7,193,986 Title: Wireless network medium access control protocol Assignee: Arlington Technologies, LLC (current) / Nortel Networks Ltd. (at time of issue) Inventors: William Giles Scanlon, Tze-Yeung Chui Filing Date…

    View full analysis →added 4/30/2026
  • US Patent 7359437, titled "Encoding method and system for reducing inter-symbol interference effects in transmission over a serial link," was filed on December 24, 2001, and issued on April 15, 2008. The original assignee was Silicon Image…

    View full analysis →added 5/14/2026
  • US patent 7490151, titled "Establishment of a secure communication link based on a domain name service (DNS) request," was issued on February 10, 2009, from an application filed on September 30, 2002. The inventors are Edward Colby Munger…

    View full analysis →added 5/10/2026
  • Patent Summary: US 7,557,788 B1 Date of Analysis: April 26, 2026 A review of U.S. Patent 7,557,788 B1, titled "Gamma reference voltage generator," has been conducted based on information available from the U.S. Patent and Trademark Office…

    View full analysis →added 5/14/2026
  • A summary of US Patent 7571014 is provided below. Title: Method and apparatus for controlling multimedia players in a multi-zone system Assignee: Sonos Inc Inventors: Robert A. Lambourne, Nicholas A. J. Millington Filing Date: June 5, 2004…

    View full analysis →added 5/12/2026
  • Here's a concise summary of US patent 7606156, incorporating information from the provided patent text and a live search for claims and litigation. US Patent 7606156 Summary: Title: Residential communications gateway (RCG) for broadband…

    View full analysis →added 5/14/2026
  • US Patent 7,702,742, titled "Mechanism for enabling memory transactions to be conducted across a lossy network," was issued on April 20, 2010, from an application filed on January 17, 2006. The original assignee was Fortinet Inc, and the…

    View full analysis →added 4/27/2026
  • US Patent 7704721 has the following summary: Title: Compositions and methods to prevent AAV vector aggregation Assignee: Genzyme Corp (Original Assignee); Genzyme Corporation (Current Assignee as of 2016-10-06) Inventors: John Fraser…

    View full analysis →added 5/14/2026
  • Here's a concise summary of US Patent 7777557: US Patent 7777557 Title: Booster circuit Current Assignee: Advanced Memory Technologies LLC (originally Panasonic Corp) Inventor: Seiji Yamahira Filing Date: January 17, 2008 Issue Date…

    View full analysis →added 5/14/2026
  • Here is a concise summary of US Patent 7851394, "Fining of boroalumino silicate glasses": Title: Fining of boroalumino silicate glasses Assignee: Corning Inc. Inventors: Adam J. G. Ellison Filing Date: 2006-06-28 Issue Date: 2010-12-14…

    View full analysis →added 5/15/2026