The catalog

Patent invalidity dossiers.

7,175 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)
  • US6775264
    0 cases6/8 sections

    I'll verify the bibliographic data and check for any 2026 CAFC docket activity naming this exact patent number. Search performed I queried for the literal string "6,775,264" / "6775264" against USPTO-derived records (Google Patents /…

    View full analysis →added 9/25/2026
  • US6775677
    0 cases6/8 sections

    I'll search for authoritative information on this patent number, including any recent litigation activity. I did not find any CAFC docket activity for this specific patent. Let me confirm with a couple of targeted searches. US Patent…

    View full analysis →added 10/1/2026
  • US6785727
    0 cases6/8 sections

    I'll verify this patent number against live sources and check for any litigation or CAFC activity. Let me check for any litigation or CAFC docket activity involving this patent. Let me attempt to retrieve the actual claim text, since the…

    View full analysis →added 9/29/2026
  • US6788428
    0 cases6/8 sections

    I'll search for authoritative information on US patent 6788428. Let me search for any CAFC litigation or docket activity involving this patent. Let me verify there's no separate litigation/PTAB record and disambiguate from a similarly…

    View full analysis →added 9/29/2026
  • US6789110
    0 cases6/8 sections

    I'll search for authoritative information on US 6789110, including any 2026 CAFC docket activity. US Patent 6,789,110 — Analyst Summary Important note on search scope: I searched for both the patent document and any 2026 CAFC docket…

    View full analysis →added 10/1/2026
  • US6789118
    0 cases6/8 sections

    I'll search for authoritative records on this patent number, checking both USPTO-style sources and litigation dockets. Let me check for litigation/PTAB activity and any Federal Circuit appeals specifically involving this patent. Let me try…

    View full analysis →added 9/24/2026
  • US6798746
    0 cases6/8 sections

    I'll search for the specific patent and any 2026 CAFC docket activity. Now let me search for any 2026 CAFC/litigation activity specifically naming this patent. Let me run two more targeted searches to be thorough on litigation/docket…

    View full analysis →added 9/24/2026
  • US6801579
    0 cases6/8 sections

    I'll search for litigation/docket information and verify details for this specific patent number. Let me check for any Federal Circuit docket activity in 2026 and USPTO records specific to this patent. US Patent 6,801,579 B1 — Analyst…

    View full analysis →added 9/26/2026
  • US6803255
    0 cases6/8 sections

    I'll search for authoritative information on this patent and check for any 2026 CAFC docket activity. Let me run a few more targeted checks to confirm the patent's status and any litigation activity. US Patent 6,803,255 — Search Summary…

    View full analysis →added 9/24/2026
  • US6803909
    0 cases6/8 sections

    I'll run targeted searches for this specific patent number, including any litigation/docket activity. Let me try a few more targeted queries (Google Patents, USPTO Patent Center, and CAFC docket searches). Search scope and caveats (read…

    View full analysis →added 9/24/2026
  • US6806370
    0 cases6/8 sections

    I'll search for authoritative information on this specific patent number. Let me search specifically for any CAFC 2026 activity or litigation involving this patent. Search results summary — US Patent No. 6,806,370 Searches run: the…

    View full analysis →added 9/24/2026
  • US6810334
    0 cases6/8 sections

    I'll run searches against public patent databases and litigation docket sources for this specific number. Let me check litigation/PTAB history and confirm bibliographic data from additional sources. Search coverage and what I found I ran…

    View full analysis →added 9/24/2026
  • US6815542
    0 cases6/8 sections

    I'll verify the bibliographic data and check for any litigation/docket records before summarizing. Let me pin down the claim set and any enforcement history. US 6,815,542 B2 — Bibliographic Summary | Field | Value | |---|---| | Patent…

    View full analysis →added 9/20/2026
  • US6816903
    0 cases6/8 sections

    I'll search for authoritative information on US Patent 6816903. Let me search for the claims text and any litigation involving this patent. Let me try to locate the claim text and check for any 2026 appellate activity. Summary — US Patent…

    View full analysis →added 9/24/2026
  • US6820210
    0 cases6/8 sections

    I'll search for authoritative information on this patent, including any 2026 CAFC docket activity. Let me do a couple of targeted searches for any litigation or CAFC 2026 activity. US Patent 6,820,210 — Analyst Summary Search scope note: I…

    View full analysis →added 10/1/2026
  • US6820233
    0 cases6/8 sections

    I'll run targeted searches for this specific patent number across patent and litigation sources. The initial searches returned mostly unrelated documents. Let me refine with more specific queries. Let me check specifically for any…

    View full analysis →added 9/24/2026
  • US6829728
    0 cases6/8 sections

    I'll run targeted searches for this exact patent number, including any 2026 CAFC activity. Let me try a couple more specific searches for USPTO records and any litigation/PTAB activity on this exact number. US 6,829,728 — Confirmed Record…

    View full analysis →added 9/27/2026
  • US6832251
    0 cases6/8 sections

    I'll build on the prior sections. Let me search for the abstract and check CAFC 2026 dockets. Let me run a couple more targeted checks on the docket side before writing up. Search scope and sourcing note I searched for the literal strings…

    View full analysis →added 9/26/2026
  • US6834341
    0 cases6/8 sections

    I'll search for this patent across the requested sources. Let me get the full claim set and check for any CAFC litigation activity. Let me pull the full claim text and check for any litigation/CAFC history. US Patent 6,834,341 B1 — Analyst…

    View full analysis →added 9/24/2026
  • US6837228
    0 cases6/8 sections

    U.S. Patent 6837228, titled "Fuel injector nozzle adapter," was assigned to Holley Performance Products Inc. The inventors are Oswald Baasch, Douglas Joseph Flynn, Laura Beth Rucker, and Shane Wilson. The patent was filed on November 4…

    View full analysis →added 7/23/2026