The catalog

Patent invalidity dossiers.

7,163 patents in the database, sorted by number of on-file litigation cases. Of these, 2,988 have at least one tracked case across 6,606 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

Software Technology & Computing Systems (T)(1343)Medical (M)(713)High-Tech (T)(550)Wireless Technologies(508)Semiconductor (T)(386)Automotive (A)(298)Industrial Manufacturing (IM)(295)Media & Broadcasting (T)(189)Biotechnology(153)Energy (E)(147)Optical Technology(144)Financial Technology (FT)(132)Sporting Goods (S)(84)Other (O)(73)Audio Technology(66)Consumer Durables(56)Home Appliance (HA)(48)Lighting (L)(47)Footwear(37)Agriculture (AG)(36)Firearms (F)(36)Gaming (G)(36)Food (FD)(35)Railroad(33)Home Security(31)Optical Communication(22)Audience Measurement(19)Plumbing(16)Baby Products(12)Printing Technology(10)Fire Safety (FS)(6)Retail Security(6)Telecommunications(5)Tech (T)(4)Aerospace(3)Aerospace (AS)(3)Printing Technology (P)(3)Aerospace (A)(2)Construction (C)(2)Printing (P)(2)Retail Technology (RT)(2)Telecommunications (T)(2)Telecommunications (TC)(2)Toys(2)Advertising (AD)(1)Aerospace (Ae)(1)Aviation(1)Aviation (AV)(1)Building & Construction(1)Building Construction (BC)(1)Building Materials(1)Chemical (C)(1)Chemical Sensing(1)Cosmetics (C)(1)Data Communication(1)Document Security(1)Electrical Components(1)Environmental Monitoring (EM)(1)Fencing(1)Fire Safety(1)Furniture (F)(1)High-Tech(1)Logistics (L)(1)Logistics & Shipping(1)Marine (M)(1)Maritime Logistics(1)Musical Instruments (MI)(1)Networking (N)(1)Office Equipment(1)Office Equipment (OE)(1)Paints & Coatings(1)Pet Products(1)Printing(1)Printing Technology (PT)(1)Retail Technology(1)Retail Technology (R)(1)Software Technology (T)(1)Textiles(1)Textiles (TX)(1)Tobacco (TB)(1)Vaping (V)(1)Video Surveillance(1)Video Technology(1)Water Treatment(1)
  • US8023425
    0 cases7/8 sections

    I'll search for this specific patent in the USPTO database and check CAFC 2026 dockets, being careful to search only for 8023425. Let me get the full independent claims and check for any CAFC activity more specifically. Let me pull the…

    View full analysis →added 8/29/2026
  • US8102074
    0 cases7/8 sections

    I'll run targeted searches for this specific patent number and for any 2026 CAFC activity. The general searches returned noise. Let me try more specific queries against patent-specific and court-specific sources. Summary of US Patent…

    View full analysis →added 9/26/2026
  • US8350763
    0 cases7/8 sections

    Here is a concise summary of US Patent 8,350,763: US Patent 8,350,763: Active Antennas for Multiple Bands in Wireless Portable Devices Title: Active antennas for multiple bands in wireless portable devices Assignee: Massively Broadband LLC…

    View full analysis →added 5/13/2026
  • US8474756
    0 cases7/8 sections

    I'll search for authoritative records on this specific patent number. Let me check for any litigation or CAFC docket activity involving this patent. US 8,474,756 B2 — Search Report Important scope caveat up front. I do not have direct…

    View full analysis →added 9/24/2026
  • US9070332
    0 cases7/8 sections

    I'll search for the specific patent and any related litigation/docket information. Let me run a few more targeted searches to check for any litigation, PTAB, or CAFC activity involving this specific patent. US Patent 9,070,332 B2 — Analyst…

    View full analysis →added 9/24/2026
  • US9215236
    0 cases7/8 sections

    Here is a concise summary of US Patent 9215236: Title: Secure, policy-based communications security and file sharing across mixed media, mixed-communications modalities and extensible to cloud computing such as SOA [cite: The full patent…

    View full analysis →added 8/11/2026
  • US9247299
    0 cases7/8 sections

    Here's a concise summary of US Patent 9247299, based on the provided authoritative patent text and a search for CAFC dockets: US Patent 9247299 Title: Method and system for television channel group Current Assignee: Innobrilliance LLC…

    View full analysis →added 5/21/2026
  • US9426452
    0 cases7/8 sections

    US Patent 9426452 Summary Title: Faster state transitioning for continuous adjustable 3Deeps filter spectacles using multi-layered variable tint materials Assignee: Vdpp LLC Inventors: Kenneth Martin Jacobs, Ronald Steven Karpf Filing…

    View full analysis →added 8/20/2026
  • US9502025
    0 cases7/8 sections

    Here's a concise summary of US Patent 9,502,025: Title: System and method for providing a natural language content dedication service Assignee: VB Assets LLC Inventors: Mike Kennewick, Lynn Elise Armstrong Filing Date: 2010-11-10 Issue…

    View full analysis →added 5/14/2026
  • US9523826
    0 cases7/8 sections

    US Patent 9523826, titled "Pluggable optical transceiver module," was issued to Applied Optoelectronics Inc. The inventors are Chao-Hung Tsai, Chien-Te Lin, and Che-Shou Yeh. The patent was filed on October 2, 2014, and issued on December…

    View full analysis →added 5/12/2026
  • US9525084
    0 cases7/8 sections

    US Patent 9,525,084, titled "Microstructure enhanced absorption photosensitive devices," was issued to W&wsens Devices Inc. on December 20, 2016. The application was filed on November 18, 2015, with inventors Shih-Yuan Wang and Shih-Ping…

    View full analysis →added 5/14/2026
  • USEP2449782B1
    0 cases7/8 sections

    As a technical patent analyst, here is a concise summary of patent EP2449782B1. It is important to note that EP2449782B1 is a European patent, not a United States patent. Searches of the United States Patent and Trademark Office (USPTO)…

    View full analysis →added 4/26/2026
  • USUS7391791B2
    0 cases7/8 sections

    A concise summary of US Patent US7391791B2 is as follows: Title: Method and system for synchronization of content rendering Assignee: Implicit Networks, Inc. Inventors: Information not authoritatively available. Filing Date: December 17…

    View full analysis →added 4/26/2026
  • US0220967
    0 cases6/8 sections

    Analysis of US Patent 0220967 Date of Analysis: 2026-05-01 Subject: US Patent 0220967 Executive Summary A comprehensive search for a granted US Patent with the number 0220967 did not yield a direct match. The provided number does not…

    View full analysis →added 4/27/2026
  • US1000000
    0 cases6/8 sections

    I'll search for the specific patent number and any related litigation/docket activity. Let me verify the litigation/docket references and check the "similar documents" claims. Let me try to retrieve the complete claim text, which appears…

    View full analysis →added 9/24/2026
  • US10001397
    0 cases6/8 sections

    I'll run targeted searches for this specific patent number and its litigation/administrative history. Let me check for any litigation or PTAB proceedings, and confirm the CAFC docket angle. Search results and caveats first What I could…

    View full analysis →added 9/24/2026
  • US10001400
    0 cases6/8 sections

    I'll search for this specific patent number and any related litigation. US Patent 10,001,400 — Summary Important caveat on scope of search: I ran targeted searches for this exact number (US 10,001,400 / US10001400) against publicly indexed…

    View full analysis →added 9/24/2026
  • US10012574
    0 cases6/8 sections

    I'll search for authoritative records on this patent number, including USPTO and any 2026 CAFC docket activity. Let me check for any litigation or CAFC docket activity involving this patent. Let me look for the specific claim set and any…

    View full analysis →added 9/24/2026
  • US10019722
    0 cases6/8 sections

    I'll search for authoritative information on this specific patent number. Let me search for any 2026 CAFC docket activity and additional USPTO records. US Patent 10,019,722 — Verified Bibliographic Summary Search scope note: I searched for…

    View full analysis →added 10/1/2026
  • US10025731
    0 cases6/8 sections

    US patent 10025731, titled "Memory module and circuit providing load isolation and noise reduction," was assigned to Netlist Inc. The inventors are Hyun Lee, Jayesh R. Bhakta, Jeffrey C. Solomon, Mario Jesus Martinez, and Chi-She Chen. The…

    View full analysis →added 5/14/2026