The catalog
Patent invalidity dossiers.
1,809 patents in the database, sorted by number of on-file litigation cases. Of these, 1,391 have at least one tracked case across 3,023 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
- 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 - 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 - 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 - US119322302 cases →6/8 sections
US Patent 11932230, titled "Vehicle gear selection control," was issued to Bulletproof Property Management LLC. The inventor is Bennet Langlotz. The patent was filed on June 5, 2023, and granted on March 19, 2024. Abstract: The patent…
View full analysis →added 5/12/2026 - US119485502 cases →6/8 sections
US patent 11948550, titled "Real-time accent conversion model", was issued to Sanas Ai Inc. on April 2, 2024. The inventors are Maxim Serebryakov and Shawn Zhang. The application was filed on August 27, 2021. Abstract: The patent describes…
View full analysis →added 5/12/2026 - US119526002 cases →6/8 sections
US Patent 11952600, titled "PH20 polypeptide variants, formulations and uses thereof," was issued to Halozyme Inc. on April 9, 2024, from an application filed on June 20, 2023. The inventors are Ge Wei, H. Michael Shepard, Qiping Zhao, and…
View full analysis →added 6/15/2026 - US119869462 cases →6/8 sections
Here is a concise summary of US Patent 11986946: US Patent 11986946: Summary Title: Connection structure of module, storage box and storage box assembly Assignee: Meridian International Co Ltd. Inventors: Hongquan Zhang, Qiang Wang, Shujun…
View full analysis →added 5/14/2026 - US120015992 cases →6/8 sections
Here is a concise summary of US patent 12001599: Title: Head-worn device with connection region Assignee: Ingeniospec LLC Inventors: Thomas A. Howell, David Chao, C. Douglass Thomas, Peter P. Tong Filing Date: 2023-11-27 Issue Date…
View full analysis →added 5/12/2026 - US120151182 cases →6/8 sections
I am providing a summary of US patent 12015118 based on the provided patent text and will search for CAFC 2026 dockets. US Patent 12015118: Concise Summary Title: Electrode electrochemical device and electronic device Assignee: Ningde…
View full analysis →added 6/27/2026 - US120182982 cases →6/8 sections
Here is a concise summary of US Patent 12018298: US Patent Number: 12018298 Title: PH20 polypeptide variants, formulations and uses thereof Assignee: Halozyme Inc. [cite: The provided patent text states "Current Assignee: Halozyme Inc"]…
View full analysis →added 6/15/2026 - US120634022 cases →6/8 sections
Here is a concise summary of US patent 12063402 based on the provided authoritative text: US Patent 12063402 Title: Methods and apparatus to correlate census measurement data with panel data Assignee: Nielsen Co US LLC Inventor: F. Gavin…
View full analysis →added 5/12/2026 - US120796672 cases →6/8 sections
Here's a concise summary of US Patent 12079667: Title: Virtual systems management Assignee: TOUTVIRTUAL Inc. (Original Assignee). Reassigned to WYE IP CAPITAL LLC on 2025-09-29. Inventor: Vipul Pabari Filing Date: 2023-04-14 Issue Date…
View full analysis →added 5/12/2026