The catalog

Patent invalidity dossiers.

2,375 patents in the database, sorted by number of on-file litigation cases. Of these, 1,711 have at least one tracked case across 3,679 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

  • US5602377
    0 cases8/8 sections

    Analysis of U.S. Patent 5,602,377 As of April 28, 2026, this report provides a concise summary of United States Patent 5,602,377. A search of the United States Patent and Trademark Office (USPTO) database confirms the following details…

    View full analysis →added 4/27/2026
  • US5704012
    0 cases8/8 sections

    US Patent 5704012, titled "Adaptive resource allocation using neural networks," was issued to International Business Machines Corp on December 30, 1997, based on a filing date of May 31, 1995. The sole inventor listed is Joseph Phillip…

    View full analysis →added 6/2/2026
  • US5708678
    0 cases8/8 sections

    A concise summary of US Patent 5708678 is as follows: Title: Method to equalize the temperature in a heating furnace with a controlled-oxidization ambient and heating furnace carrying out the method Assignee: Danieli and C Officine…

    View full analysis →added 5/10/2026
  • US5768384
    0 cases8/8 sections

    Summary of US Patent 5,768,384 Based on the provided patent text and public records, here is a concise summary of US patent 5,768,384. Title: System for identifying authenticating and tracking manufactured articles Assignee: Pitney Bowes…

    View full analysis →added 4/27/2026
  • US5852810
    0 cases8/8 sections

    Here's a concise summary of US Patent 5852810: US Patent 5852810: Geographic specific information search system and method Title: Geographic specific information search system and method Assignee: STUDENT HOUSING NETWORK Inc FORMERLY KNOWN…

    View full analysis →added 5/16/2026
  • US5905248
    0 cases8/8 sections

    An analysis of United States Patent 5,905,248 reveals the following details: Title: System and method for carrying out information-related transactions using web documents embodying transaction enabling applets automatically launched and…

    View full analysis →added 4/27/2026
  • US5948040
    0 cases8/8 sections

    Here's a concise summary of US Patent 5948040: Title: Travel reservation information and planning system Assignee: DeLorme Publishing Co Inc Inventors: David M. DeLorme, Keith A. Gray, T. Angus Ferguson Filing Date: 1997-02-06 Issue Date…

    View full analysis →added 5/16/2026
  • US6076733
    0 cases8/8 sections

    Patent Summary: U.S. Patent No. 6,076,733 Date of Analysis: April 26, 2026 A review of the U.S. Patent and Trademark Office (USPTO) database and the 2026 dockets of the U.S. Court of Appeals for the Federal Circuit (CAFC) has been…

    View full analysis →added 4/28/2026
  • US6098106
    0 cases8/8 sections

    A concise summary of US Patent 6,098,106 is as follows: Title: Method for controlling a computer with an audio signal Assignee: Based on the provided patent text, the original assignee is Digital Convergence com Inc. Inventors: Jeffry…

    View full analysis →added 4/27/2026
  • US6108329
    0 cases8/8 sections

    Summary of U.S. Patent 6,108,329 A review of U.S. Patent 6,108,329 reveals the following details regarding the invention and its legal status. Title: Telephone apparatus used for computer network telephone system Assignee: The patent was…

    View full analysis →added 5/10/2026
  • US6199048
    0 cases8/8 sections

    A comprehensive analysis of U.S. Patent 6,199,048 reveals a foundational system for linking physical products to the digital world, a concept that has become ubiquitous in today's interconnected economy. As of April 28, 2026, a search for…

    View full analysis →added 4/27/2026
  • 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
  • US6596296
    0 cases8/8 sections

    The requested information for US Patent 6596296 is as follows: US Patent 6596296: Drug releasing biodegradable fiber implant Title: Drug releasing biodegradable fiber implant Assignee: University of Texas System Inventors: Kevin D. Nelson…

    View full analysis →added 7/27/2026
  • 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
  • US6868682
    0 cases8/8 sections

    Here's a concise summary of US Patent 6868682: Title: Agent based control method and system for energy management Assignee: The current assignee listed is Valtrus Innovations Limited. The original assignee was Hewlett Packard Development…

    View full analysis →added 8/19/2026
  • US6993658
    0 cases8/8 sections

    US patent 6993658 (US6993658B1) pertains to using personal communication devices for user authentication. Here's a concise summary of the patent: Title: Use of personal communication devices for user authentication Current Assignee…

    View full analysis →added 6/11/2026
  • 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