The catalog
Patent invalidity dossiers.
7,218 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
- US117782452 cases →6/8 sections
I'll search for this specific patent number and related litigation. I have the patent's front matter. Now let me pull the claims and check for litigation/docket activity. The patent's claim text isn't surfacing yet. Let me target the…
View full analysis →added 9/24/2026 - US117949522 cases →6/8 sections
I'll search for authoritative information on this patent number, then cross-check against the full text provided. Let me dig into the litigation and PTAB/CAFC aspects. Let me check specifically for Federal Circuit 2026 dockets appealing…
View full analysis →added 9/25/2026 - US118064542 cases →6/8 sections
I'll verify the patent record and check for any litigation/appeal activity before summarizing. I ran targeted searches against Google Patents (the authoritative full text), the PTAB/PTACTS record, PTAB docket aggregators, and Federal…
View full analysis →added 9/25/2026 - US118065262 cases →6/8 sections
US Patent 11806526 Summary Title: Stimulation for treating sleep disordered breathing Assignee: Inspire Medical Systems Inc Inventors: Darrell Wagner, Quan Ni, John Rondoni, Dave Dieken Filing Date: September 4, 2020 Issue Date: November…
View full analysis →added 5/12/2026 - US118120912 cases →6/8 sections
US Patent 11812091 Information: Title: Multimedia player displaying operation panel depending on contents Assignee: Maxell Ltd. Inventors: Yoshihiro Machida, Nobuhiro Tsutsumi, Kouji Kamogawa Filing Date: July 19, 2022 Issue Date: November…
View full analysis →added 5/14/2026 - US118133812 cases →6/8 sections
I will now provide a concise summary of US patent 11813381, incorporating information from the provided patent text and search results. Summary of US Patent 11813381 Patent Number: US11813381 (specifically, US11813381B2) Title: Breast pump…
View full analysis →added 7/31/2026 - US118504242 cases →6/8 sections
US patent 11850424, titled "Stimulation for treating sleep disordered breathing," was granted to Inspire Medical Systems, Inc.. The inventors are Darrell Wagner, Quan Ni, John Rondoni, and David Dieken. The patent was filed on June 16…
View full analysis →added 5/12/2026 - US118529012 cases →6/8 sections
Here's a concise summary of US Patent 11852901, "Wireless headset supporting messages and hearing enhancement": Title: Wireless headset supporting messages and hearing enhancement Assignee: Ingeniospec LLC Inventors: Thomas A. Howell…
View full analysis →added 5/13/2026 - US118574822 cases →6/8 sections
US Patent 11857482, titled "Massage device having variable stroke length," was filed on February 25, 2022, and issued on January 2, 2024. The inventors are Philip C. Danby and John Charles Danby. The current assignees are Hyperice IP Subco…
View full analysis →added 6/15/2026 - US118710882 cases →6/8 sections
I'll ground this on the provided patent text first, then check live sources for claim language and 2026 docket activity. I have claim 1's text and know the independent-claim structure. Let me pull claims 8, 13, and 24, plus check for any…
View full analysis →added 8/28/2026 - US118749102 cases →6/8 sections
US Patent 11874910: Facial Recognition Authentication System Including Path Parameters Title: Facial recognition authentication system including path parameters Assignee: Facetec Inc Inventors: Kevin Alan Tussy Filing Date: October 22…
View full analysis →added 6/18/2026 - US118755802 cases →6/8 sections
Here's a concise summary of US patent 11875580: US Patent 11875580: Camera initialization for lane detection and distance estimation using single-view geometry Title: Camera initialization for lane detection and distance estimation using…
View full analysis →added 7/30/2026 - US118769242 cases →6/8 sections
I'll verify the CAFC 2026 docket activity and USPTO record for this specific number. US Patent No. 11,876,924 — Bibliographic & Claim Summary Search scope note. I searched for the exact string 11876924 (and the corresponding grant number…
View full analysis →added 9/25/2026 - US118928972 cases →6/8 sections
Here is a concise summary of US Patent 11892897: US Patent: 11892897 Title: Systems and methods for predicting which software vulnerabilities will be exploited by malicious hackers to prioritize for patching Assignee: Skysong Innovations…
View full analysis →added 5/14/2026 - US118943062 cases →6/8 sections
US Patent 11894306: Chip Package Summary Title: Chip package Assignee: Myw Semitech LLC [cite: Myw Semitech LLC] Inventors: Ping-Jung Yang [cite: Ping-Jung Yang] Filing Date: November 12, 2022 [cite: Filing date 2022-11-12] Issue Date…
View full analysis →added 5/12/2026 - US119058962 cases →6/8 sections
US Patent 11905896, titled "Dual fuel selector switch," was issued to Champion Power Equipment Inc. on February 20, 2024. The patent was filed on June 7, 2023, and lists Mark J. Sarder, Leigh Jenison, and Ian Schmit as the inventors…
View full analysis →added 5/14/2026 - US119168932 cases →6/8 sections
US Patent 11916893, titled "Embedded universal integrated circuit card supporting two-factor authentication," was issued on February 27, 2024. It lists John A. Nix as the inventor. The current assignees are Network 1 Technologies Inc and…
View full analysis →added 5/12/2026 - US119234982 cases →6/8 sections
US Patent 11923498, titled "Lithium-ion battery having desirable safety performance," was issued on March 5, 2024, to Ningde Amperex Technology Ltd.. The patent was filed on May 17, 2022, and lists Tao Tao and Ming liang Mo as the…
View full analysis →added 6/27/2026 - US119247432 cases →6/8 sections
US Patent 11924743: Systems/Methods of Establishing and Using a Capability to Execute Financial Transactions by a Smartphone Title: Systems/methods of establishing a capability, and using the capability, to execute financial transactions…
View full analysis →added 5/14/2026 - US119268592 cases →6/8 sections
US Patent 11,926,859, titled "Methods and means for the production of Ig-like molecules," was issued on March 12, 2024, from an application filed on May 16, 2023. The current assignee is Merus BV. The inventors are Cornelis Adriaan De…
View full analysis →added 7/9/2026