The catalog
Patent invalidity dossiers.
7,184 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 patent
Drop a US patent number — we’ll verify it on Google Patents and generate the full invalidity dossier.
By industry
- US99862270 cases1/8 sections
Patent Overview — US 9,986,227 B2 Title: Tracked automultiscopic 3D tabletop display Patent number / application: US 9,986,227 B2; application US 15/626,532; pre-grant publication US 2017/0289530 A1. Assignee: Disney Enterprises, Inc…
View full analysis →added 9/23/2026 - US99935880 cases1/8 sections
Patent Overview — US 9,993,588 B2 Title: Wearable VAD controller with reserve battery Patent number / application: US 9,993,588 B2; application US 12/602,914; pre-grant publication US 2010/0241223 A1. Inventors: Jim Lee, James Malmstrom…
View full analysis →added 9/23/2026 - US99990840 cases1/8 sections
Patent Overview: US9999084B2 Title: Associated device discovery in IMS networks Patent number: US9999084B2 Application number: US14/663,584 Publication (grant): 2018-06-12 (application published as US20150195862A1 on 2015-07-09) Priority…
View full analysis →added 10/14/2026 - USRE93800 cases1/8 sections
Patent Overview Title: Steam-Operated Water-Ejector Patent number: USRE9380E (a reissue) Inventor: Hugh Coll, of Black Hawk, Beaver County, Pennsylvania Original patent: No. 90,930, dated June 8, 1869 Reissue application filed: September…
View full analysis →added 9/24/2026