The catalog

Patent invalidity dossiers.

7,245 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)

US11916902
0 cases1/8 sections
Patent Overview: US 11916902 B2 Title: "Systems and methods for using a network access device to secure a network prior to requesting access to the network by the network access device" Patent number: US11916902B2 | Application number…
View full analysis →added 10/17/2026
US11932441
0 cases1/8 sections
Patent Overview — US 11,932,441 B1 Title: Container Patent number / application: US 11,932,441 B1; application US18/506,811 Inventor / assignee: Merrilee Kick; original assignee listed as "Individual"; the patent record shows assignment to…
View full analysis →added 11/3/2026
US11956338
0 cases1/8 sections
Patent Overview — US11956338B2 Title: Correlating packets in communications networks Patent number: US11956338B2 Assignee / current assignee (as listed): Centripetal Networks LLC (original assignee: Centripetal Networks LLC; an assignment…
View full analysis →added 9/21/2026
US11966347
0 cases1/8 sections
Patent Overview — US11966347B2 Title: Method and system for making functional devices available to participants of meetings Patent number / application: US11966347B2; application US17/742,166; earlier publication US20220269634A1…
View full analysis →added 10/6/2026
US11973579
0 cases1/8 sections
Patent Overview — US 11,973,579 B2 Title: Add/drop multiplexer, network system, transmission method, non-transitory computer readable medium, and management device Patent number: US11973579B2 | Application: US17/871,382 | Filed: 2022-07-22…
View full analysis →added 9/23/2026
US11986382
0 cases1/8 sections
Patent Overview: US 11,986,382 B2 Title: System for treating embolism and associated devices and Methods Patent number: US11986382B2 Assignee: Inari Medical, Inc. (current assignee listed; original assignee also Inari Medical Inc)…
View full analysis →added 9/23/2026
US11995959
0 cases1/8 sections
Patent Overview — US 11995959 B2 Title: Methods for selling pre-printed online lottery tickets Patent number / application: US 11995959 B2; application US 17/859,338 (published as US 20220343718 A1) Inventor / assignee: Gino Giunti…
View full analysis →added 9/23/2026
US11997597
0 cases1/8 sections
US11997597B2 — Patent Overview Title: Method of monitoring physical downlink control channel for power saving signal and related device Patent: US11997597B2 (application US18/136,449; published as US20230413174A1) Assignee (per listing)…
View full analysis →added 10/31/2026
US11998854
0 cases1/8 sections
Patent Overview — US11998854B1 Title: Low-friction recreational slide system Assignee: Slick Slide LLC (original and current) Inventor: Gary Schmit Priority date: 2022-11-01; Filed: 2023-07-10; Granted/Published: 2024-06-04; Anticipated…
View full analysis →added 10/3/2026
US12051444
0 cases1/8 sections
Patent Overview — US 12051444 B2 Title: Systems and methods for repairing remotely recorded audio data Patent number: US 12051444 B2 (application US 18/123,619; publication US 2023/0245682 A1) Inventors: Glenn Norman Sanders; Howard Glenn…
View full analysis →added 9/24/2026
US12060590
0 cases1/8 sections
Patent Overview — US12060590B2 Title: PH20 polypeptide variants, formulations and uses thereof Patent number: US12060590B2 (application US18/068,218; pre-grant publication US20230295593A1) Assignee/Applicant: Halozyme Inc (also listed…
View full analysis →added 10/15/2026
US12075943
0 cases1/8 sections
Patent Overview: US12075943B2 — "Cooking device and components thereof" Bibliographic data (from source): Application US18/186,671; filed 2023-03-20; granted/publication date 2024-09-03; priority date listed as 2019-07-15; anticipated…
View full analysis →added 9/23/2026
US12098889
0 cases1/8 sections
Patent Overview — US12098889B2 Title: Falling film heat exchanger Patent number: US12098889B2 (application US16/757,337; also published as US20210190432A1) Assignee/current assignee (as listed): Tyco Fire and Security GmbH; York Wuxi Air…
View full analysis →added 9/23/2026
US12107893
0 cases1/8 sections
Patent Overview: US 12107893 B2 Title: Methods and systems for protecting a secured network Patent number: US 12107893 B2 Application number: US 17/230,425 Inventors: Steven Rogers, Sean Moore, David K. Ahn, Peter P. Geremia Assignee…
View full analysis →added 9/23/2026
US12108562
0 cases1/8 sections
Patent Overview — US 12108562 B2 Title: "Electronic display with cooling" Patent number: US 12108562 B2 Application number: US 17/967,607 Inventors: William Dunn; Tim Hubbard Current/Original Assignee: Manufacturing Resources International…
View full analysis →added 9/23/2026
US12109205
0 cases1/8 sections
Patent Overview: US 12109205 B2 Title: Methods of treating Fabry patients having renal impairment Patent number: US 12109205 B2 Application number: US 17/078,840 Inventors: Jeff Castelli; Elfrida Benjamin Assignee: Amicus Therapeutics Inc…
View full analysis →added 9/21/2026
US12109938
0 cases1/8 sections
Patent Overview — US 12109938 B2 Title: System for communication of hazardous vehicle and road conditions Patent number / application: US 12109938 B2 (application US 16/991,595; pre-grant publication US 2021/0049909 A1) Assignee: Emergency…
View full analysis →added 10/20/2026
US12125550
0 cases1/8 sections
Patent Overview — US 12125550 B2 Title: Memory device, memory system including the memory device, and test operation of the memory device Assignee: SK Hynix Inc. (original assignee; listed current assignee) Key Dates (per the supplied…
View full analysis →added 9/23/2026
US12140819
0 cases1/8 sections
US 12140819 B1 — Patent Overview Title: Head-worn personal audio apparatus supporting enhanced audio output Patent number: US 12140819 B1 Application number: US 18/594,662 Filed: 2024-03-04 Granted / published: 2024-11-12 Pre-grant…
View full analysis →added 9/23/2026
US12152520
0 cases1/8 sections
Patent Overview: US 12152520 B2 Title: Urea pump, and control method and control system for urea pump Patent number: US 12152520 B2 Application number: US 18/276,919 Publication of application: US 20240125262 A1 (2024-04-18)…
View full analysis →added 9/17/2026