The catalog

Patent invalidity dossiers.

7,244 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)
  • US7881858
    0 cases6/8 sections

    I'll search for the specific patent number to check for any USPTO records and CAFC 2026 docket activity. Search Results for US Patent No. 7,881,858 Docket/litigation check — negative result: I searched for USPTO and CAFC 2026 docket…

    View full analysis →added 9/24/2026
  • US7882560
    0 cases6/8 sections

    I'll search for authoritative information on this specific patent number and any 2026 litigation activity. Let me check specifically for litigation and appellate activity, and confirm the claim text. US 7,882,560 B2 — Analyst Summary…

    View full analysis →added 9/24/2026
  • US7906363
    0 cases6/8 sections

    I'll search for authoritative information on this patent, including any 2026 CAFC activity. Let me check for any 2026 litigation or CAFC docket activity specifically involving this patent. Let me verify the claim set and confirm no 2026…

    View full analysis →added 10/1/2026
  • US7925763
    0 cases6/8 sections

    I'll run targeted searches for this specific patent number and check current docket sources. Let me verify the bibliographic record and check for any current proceedings. US 7,925,763 B2 — Concise Summary Search scope note. I ran queries…

    View full analysis →added 9/18/2026
  • US7933722
    0 cases6/8 sections

    I'll research this patent number. Let me run targeted searches. Let me check USPTO/CAFC sources and litigation records directly. Let me retrieve the full claim set and check for any appellate/litigation activity specifically. US 7,933,722…

    View full analysis →added 9/24/2026
  • US7936279
    0 cases6/8 sections

    I'll search for authoritative information on US 7936279, including any CAFC 2026 docket activity. US Patent 7,936,279 — Summary Note on sourcing: The following is drawn from the patent text supplied as authoritative in the user message…

    View full analysis →added 9/24/2026
  • US7938680
    0 cases6/8 sections

    I'll run targeted searches for this specific patent number across USPTO resources and litigation dockets. Now let me check for any litigation or Federal Circuit activity involving this patent. US Patent 7,938,680 — Search Results Summary…

    View full analysis →added 10/1/2026
  • US7949604
    0 cases6/8 sections

    I'll search for authoritative information on this patent number, including any litigation or CAFC docket activity. The initial searches returned nothing relevant. Let me try more targeted queries. Let me do one more targeted check for any…

    View full analysis →added 9/30/2026
  • US7950614
    0 cases6/8 sections

    I'll search for authoritative information on this patent, including any 2026 litigation activity. The generic searches returned unrelated results. Let me try more targeted queries. Let me verify assignee/ownership and check for any…

    View full analysis →added 9/29/2026
  • US7953411
    0 cases6/8 sections

    Here's a concise summary of US Patent 7953411: Title: Virtual soft hand over in OFDM and OFDMA wireless communication network Assignee: Integral Wireless Technologies LLC (Current Assignee) Original Assignee: ZTE USA Inc Inventor: Mary…

    View full analysis →added 6/9/2026
  • US7966628
    0 cases6/8 sections

    I'll search for this specific patent number as instructed. Let me run additional targeted searches for the USPTO record and any 2026 CAFC activity. Let me try a few more direct searches to confirm the record and check for any 2026…

    View full analysis →added 9/24/2026
  • US7966941
    0 cases6/8 sections

    I'll verify the patent details and check for any litigation/docket activity. Verification & search notes I searched for the specific number 7966941 (returned as US 7,966,941 B1 / application US 12/839,654). Results are consistent across…

    View full analysis →added 9/24/2026
  • US7968532
    0 cases6/8 sections

    I'll search for the specific patent number 7968532 across USPTO and CAFC sources. The initial searches returned irrelevant matches. Let me search more targeted sources. Summary — US Patent 7,968,532 B2 Important sourcing note: My web…

    View full analysis →added 9/24/2026
  • US7969231
    0 cases6/8 sections

    Here is a concise summary of US patent 7969231: US Patent 7969231 Summary Title: Internal voltage generating circuit Assignee: The current assignee is Advanced Memory Technologies LLC. The original assignee was Panasonic Corp. Inventors…

    View full analysis →added 5/14/2026
  • US7969931
    0 cases6/8 sections

    I'll verify against live sources, including checking for CAFC 2026 docket activity. Let me check specifically for litigation/CAFC activity involving this patent number. US 7,969,931 B2 — Patent Summary Retrieval note (important): I do not…

    View full analysis →added 9/24/2026
  • US7979066
    0 cases6/8 sections

    I'll run several targeted searches against USPTO, CAFC docket, and litigation sources for this specific patent number. Let me check the CAFC docket records and PTAB/IPR activity specifically involving the '066 patent. US 7,979,066 B2 —…

    View full analysis →added 9/29/2026
  • US7986127
    0 cases6/8 sections

    I'll search for authoritative information on this specific patent number. Bottom line I identified the record for US 7,986,127 B2 and only that number. I could not locate any Court of Appeals for the Federal Circuit 2026 docket (or any…

    View full analysis →added 9/30/2026
  • US7986426
    0 cases6/8 sections

    US patent 7986426, titled "Distributed computer architecture and process for document management," was invented by Laurence C. Klein. It was filed on December 4, 2008, and issued on July 26, 2011. The original assignee was Renaissance…

    View full analysis →added 5/10/2026
  • US7995580
    0 cases6/8 sections

    I'll search for the specific patent number and any associated litigation. Let me dig into the claim set and any litigation records specifically. Let me try to retrieve the actual claim text for this specific patent. Bottom line US…

    View full analysis →added 9/26/2026
  • US8004410
    0 cases6/8 sections

    I'll search for the specific patent and any related litigation/docket information. Let me get the actual claim text and confirm the front-page bibliographic data. Let me try to retrieve the granted claim set directly. US 8,004,410 B2 —…

    View full analysis →added 9/30/2026