The catalog

Patent invalidity dossiers.

1,391 patents in the database, sorted by number of on-file litigation cases. Of these, 1,137 have at least one tracked case across 2,473 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

  • US6317838
    0 cases8/8 sections

    Here's a concise summary of US patent 6317838, "Method and architecture to provide a secured remote access to private resources": Title: Method and architecture to provide a secured remote access to private resources Assignee: EVIDAN…

    View full analysis →added 5/29/2026
  • US6430408
    0 cases8/8 sections

    Analysis of U.S. Patent 6430408: A System for Market-Based Allocation of Wireless Network Resources Washington D.C. - A detailed analysis of United States Patent 6430408, titled "Allocating antenna-provided communications services,"…

    View full analysis →added 4/30/2026
  • US6529316
    0 cases8/8 sections

    Analysis of U.S. Patent 6,529,316 Date of Analysis: April 26, 2026 This report provides a concise summary of United States Patent 6,529,316, including its key bibliographic details and a plain-language overview of its independent claims. A…

    View full analysis →added 5/5/2026
  • US6537227
    0 cases8/8 sections

    Here is a concise summary of US patent 6537227: US Patent 6537227: Method and equipment for human-related measuring Title: Method and equipment for human-related measuring Assignee: Polar Electro Oy Inventors: Hannu Kinnunen, Seppo Nissilä…

    View full analysis →added 5/16/2026
  • US6604216
    0 cases8/8 sections

    A comprehensive analysis of United States Patent 6604216 reveals the following details: Title: Telecommunications system and method for supporting an incremental redundancy error handling scheme using available gross rate channels…

    View full analysis →added 5/10/2026
  • US7069287
    0 cases8/8 sections

    Analysis of U.S. Patent 7,069,287 Washington, D.C. - A detailed analysis of United States Patent 7,069,287 reveals a method for improving the efficiency of cryptographic computations on microprocessors with limited capabilities…

    View full analysis →added 4/30/2026
  • US7279708
    0 cases8/8 sections

    To provide a comprehensive analysis of U.S. Patent 7,279,708, I will conduct a thorough search of the United States Patent and Trademark Office (USPTO) database. This search will be performed today, April 26, 2026, to ensure the most…

    View full analysis →added 5/13/2026
  • US7305442
    0 cases8/8 sections

    Summary of U.S. Patent 7,305,442 Title: Asynchronous user-authorized advertising Assignee: The original assignee was Sprint Spectrum L.P. As of the latest assignment recorded on August 23, 2022, the assignee is Sprint Spectrum LLC, along…

    View full analysis →added 5/12/2026
  • US7383209
    0 cases8/8 sections

    Summary of U.S. Patent 7,383,209 A concise summary of the key details of U.S. Patent 7,383,209 is provided below, based on a search of the United States Patent and Trademark Office (USPTO) database. A search of the Court of Appeals for the…

    View full analysis →added 4/27/2026
  • US7482916
    0 cases8/8 sections

    Patent Analysis: US 7,482,916 Date of Analysis: April 26, 2026 Patent Number: 7,482,916 Summary | | | |---|---| | Title | Automatic signaling systems for vehicles | | Assignee | Wyoming Technology Licensing LLC | | Inventors | Anita Au…

    View full analysis →added 4/30/2026
  • US7670612
    0 cases8/8 sections

    Patent Summary: US 7,670,612 B2 Title: Multi-phase, multi-compartment capsular delivery apparatus and methods for using same Assignee: INNERCAP Technologies Inc Inventor: Fred H. Miller Filing Date: March 19, 2004 Issue Date: March 2, 2010…

    View full analysis →added 5/1/2026
  • US7670612B2
    0 cases8/8 sections

    Summary of U.S. Patent 7,670,612 B2 Title: Multi-phase, multi-compartment capsular delivery apparatus and methods for using same Assignee: INNERCAP Technologies Inc Inventor: Fred H. Miller Filing Date: March 19, 2004 Issue Date: March 2…

    View full analysis →added 5/1/2026
  • US7738595
    0 cases8/8 sections

    Here is a concise summary of US patent 7738595: US Patent 7738595: Multiple input, multiple output communications systems Title: Multiple input, multiple output communications systems Assignee: Integral Wireless Technologies LLC Inventor…

    View full analysis →added 5/25/2026
  • US7765126
    0 cases8/8 sections

    An analysis of United States Patent 7,765,126 reveals the following details: Title: System and method for automatic access of a remote computer over a network Assignee: The listed current assignee is Nm LLC. The original assignee was…

    View full analysis →added 4/27/2026
  • US8031223
    0 cases8/8 sections

    I will search the USPTO database for the patent and provide the requested summary. I will also search the CAFC dockets for 2026 for any cases involving patent 8031223. US Patent 8031223 Summary Title: Virtual reality camera Assignee: Cedar…

    View full analysis →added 5/10/2026
  • US8069073
    0 cases8/8 sections

    Of course. Here is a concise summary of US Patent 8,069,073. Summary of US Patent 8,069,073 Title: Method and system for providing health and nutrition related information Assignee: Healthy Circles, LLC (Bala Cynwyd, PA) Inventors: Steven…

    View full analysis →added 4/26/2026
  • US8131597
    0 cases8/8 sections

    A technical analysis of U.S. Patent 8,131,597 reveals a system for linking physical objects to online resources, a foundational concept in the landscape of the Internet of Things and QR code functionality. The patent, which has been the…

    View full analysis →added 4/27/2026
  • US8132515
    0 cases8/8 sections

    Here's a concise summary of US Patent 8132515, incorporating information from the provided patent text and search results: US Patent 8132515 Summary Title: Railroad gondola car structure and mechanism therefor Assignee: National Steel Car…

    View full analysis →added 5/14/2026
  • US8145721
    0 cases8/8 sections

    Analysis of U.S. Patent 8,145,721: Bit Streams Combination of Downloaded Multimedia Files As of April 26, 2026, this report provides a concise summary of U.S. Patent 8,145,721, including its key details and an overview of its independent…

    View full analysis →added 5/11/2026
  • US8166892
    0 cases8/8 sections

    US Patent 8,166,892: Railroad Gondola Car Structure and Mechanism Therefor Title: Railroad gondola car structure and mechanism therefor Assignee: National Steel Car Ltd. Inventors: James W. Forbes, Marcus Thiesen, Dave Keats Filing Date…

    View full analysis →added 5/14/2026