The catalog
Patent invalidity dossiers.
5,810 patents in the database, sorted by number of on-file litigation cases. Of these, 1,947 have at least one tracked case across 4,025 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
US Patent 7583191, titled "Security system and method for use of same," was filed on November 14, 2006, and issued on September 1, 2009. The original assignee was an Individual, and the inventor is Duke W. Zinser. As of recent…
View full analysis →added 5/12/2026US Patent 7,594,708 (US7594708B2) — Patent Summary Bibliographic Data | Field | Value | |---|---| | Patent number | US 7,594,708 B2 | | Title | Methods and apparatuses for sensing temperature of multi-via heater chips | | Application | US…
View full analysis →added 9/6/2026US Patent 7,610,277, titled "Method and system for launching a browser," was filed on March 29, 2007, and issued on October 27, 2009. The inventor is Colin Brady. The original assignee was Yahoo Inc. until 2017, with subsequent assignments…
View full analysis →added 5/10/2026Here's a concise summary of US Patent 7,629,634: Title: Trenched MOSFET with trenched source contact Assignee: FORCE MOS TECHNOLOGY Co Ltd Inventors: Fu-Yuan Hsieh Filing Date: 2008-02-23 Issue Date: 2009-12-08 Abstract: A trenched MOSFET…
View full analysis →added 5/14/2026Here's a concise summary of US patent 7636146: US Patent 7636146: Summary Title: Electro-optical panel, system with terminals having different corresponding characteristics Current Assignee: 138 East LCD Advancements Ltd Inventor: Shin…
View full analysis →added 5/14/2026Here is a concise summary of US patent 7711443: US Patent 7711443: Virtual wireless multitrack recording system Assignee: Zaxcom Inc. Inventors: Glenn Norman Sanders, Howard Glenn Stark Filing Date: 2005-07-14 Issue Date: 2010-05-04…
View full analysis →added 6/15/2026Here's a concise summary of US patent 7724818: Title: Method for coding sequences of pictures Assignee: Nokia Technologies Oy Original Assignee: Nokia Inc Inventors: Miska Hannuksela, Ye-Kui Wang Filing Date: 2003-04-30 Issue Date…
View full analysis →added 5/14/2026I'll search for authoritative information on US 7,739,302 and any 2026 CAFC activity. Let me check specifically for 2026 Federal Circuit activity and current docket status. US Patent 7,739,302 — Analyst Summary Sourcing note: The…
View full analysis →added 9/12/2026US Patent 7904686, titled "Data security for use with a file system," was issued on March 8, 2011, from an application filed on May 13, 2008. The sole inventor is Ranganath G. Iyengar. The current assignee of record is Valtrus Innovations…
View full analysis →added 5/14/2026Summary of US Patent 7,924,802: Wireless Communication Systems and Methods Title: Wireless communication systems and methods Assignee: The current assignee of US Patent 7,924,802 is Cobblestone Wireless LLC. The original assignee was…
View full analysis →added 5/14/2026Search verification I searched for the specific number 7938523 (and its PTAB/CAFC litigation dockets). All results confirmed the correct patent — U.S. Patent No. US7938523B2, Application No. 11/762,101 — and I did not conflate it with…
View full analysis →added 9/3/2026I'll verify the patent record and check for any 2026 CAFC docket activity before summarizing. Let me check specifically for 2026 litigation and PTAB/appeal activity naming this patent. USPTO / Court Records Check — US 8,035,644 What I…
View full analysis →added 9/23/2026US Patent 8076194, titled "Method of fabricating metal oxide semiconductor transistor," was issued on December 13, 2011, from an application filed on May 18, 2010. The current assignee is Marlin Semiconductor Ltd, though it was originally…
View full analysis →added 5/12/2026US Patent 8124988 — Summary Bibliographic data - Patent number: US8124988B2 (application no. US12/153,910) - Title: Light emitting diode lamp package structure and assembly thereof - Inventor: Jacky Peng - Assignee (original/current)…
View full analysis →added 9/8/2026I'll search for current information on this patent and check for any 2026 litigation activity. Let me check for CAFC 2026 docket activity and the reissue status. Let me verify whether there's any 2026 Federal Circuit activity specifically…
View full analysis →added 9/25/2026US Patent 8,185,402 B2 — Summary Bibliographic Data | Field | Value | |---|---| | Patent number | US 8,185,402 B2 (US8185402B2) | | Title | Robust voice browser system and voice activated device controller | | Inventors | Alexander…
View full analysis →added 8/24/2026US Patent 8,315,400: Method and Device for Acoustic Management Control of Multiple Microphones Title: Method and device for acoustic management control of multiple microphones Assignee: The current assignees are Cases2tech LLC and…
View full analysis →added 6/15/2026US Patent 8472936: Dynamically Configurable IP Based Wireless Devices and Wireless Networks Summary: US Patent 8472936, titled "Dynamically configurable IP based wireless devices and wireless networks," was filed on September 13, 2012, and…
View full analysis →added 6/15/2026Here's a concise summary of US Patent 8488173: Title: Distributed computer architecture and process for document management Assignee: MPHJ Tech Investments LLC. Inventors: Laurence C. Klein. Filing Date: July 14, 2011. Issue Date: July 16…
View full analysis →added 5/10/2026US Patent 8501730, titled "Process for preparing benzazepine compounds or salts thereof," was issued to Otsuka Pharmaceutical Co Ltd.. The patent was filed on May 17, 2012, and granted on August 6, 2013. The inventors listed are Yasuhiro…
View full analysis →added 5/22/2026