The catalog
Patent invalidity dossiers.
1,391 patents in the database, sorted by number of on-file litigation cases. Of these, 1,137 have at least one tracked case across 2,473 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 8441721, titled "System and method of Raman amplifier pump control," was issued on May 14, 2013, from an application filed on December 30, 2009. The patent was originally assigned to Alcatel Lucent SAS and is currently assigned…
View full analysis →added 5/10/2026Concise Summary of US Patent 8457145 Title: Method and apparatus for bandwidth request/grant protocols in a wireless communication system Assignee: Quarterhill Inc. (Current Assignee); WiLAN Inc. (Original Assignee) Inventors: Ofer…
View full analysis →added 5/10/2026US Patent 8477762, titled "Self-forming VoIP network," was issued on July 2, 2013, from an application filed on January 12, 2009, under application number US12/352,457. The original assignee was Mesh Dynamics Inc, and the current assignee…
View full analysis →added 5/12/2026US Patent 8514815, titled "Training signals for selecting antennas and beams in MIMO wireless LANs," was filed on September 30, 2005, and issued on August 20, 2013. The inventors are Daqing Gu, Hongyuan Zhang, Jinyun Zhang, and Andreas F…
View full analysis →added 5/29/2026US patent 8527274, titled "System and method for delivering targeted advertisements and tracking advertisement interactions in voice recognition contexts," was issued on September 3, 2013, from an application filed on February 13, 2012…
View full analysis →added 4/27/2026US patent 8542705, titled "Key frame detection and synchronization," was filed on January 23, 2007, and issued on September 24, 2013. The inventors are Kay Johansson and Kent Karlsson. The original assignee was MobiTv Inc, with the current…
View full analysis →added 5/12/2026Here's a concise summary of US patent 8579710: US Patent 8579710: Systems and methods of virtual goods trading using ratings to ascribe value to virtual goods Title: Systems and methods of virtual goods trading using ratings to ascribe…
View full analysis →added 4/27/2026Patent Summary: US 8,664,239 B2 Title: Tacrolimus for improved treatment of transplant patients Assignee: Veloxis Pharmaceuticals Inc. Inventors: Robert D. Gordon, Per Holm, Anne-Marie Lademann, Tomas Norling Filing Date: June 23, 2011…
View full analysis →added 4/27/2026- US8717204B22 cases →6/8 sections
Here's a concise summary of US patent 8717204B2: Title: Methods for encoding and decoding data Assignee: Realtime Data LLC Inventors: James J. Fallon, Paul F. Pickel, Stephen J. McErlain, II Carlton J. Melone Filing Date: 2013-09-24 Issue…
View full analysis →added 5/29/2026 US patent 8830293, titled "Video superposition for continuous presence," was issued to Cisco Technology Inc. on September 9, 2014, from an application filed on May 26, 2009. The inventors are J. William Mauchly and Richard Thayer Wales…
View full analysis →added 5/13/2026I have successfully retrieved the core information for US Patent 8,839,293 from the provided text, including the title, assignee, inventors, filing date, and issue date. I also have the complete text of the patent, which will allow me to…
View full analysis →added 4/27/2026US Patent 8,884,373: Semiconductor Device Title: Semiconductor device Current Assignee: Advanced Integrated Circuit Process LLC Inventors: Yoshihiro Sato, Hideyuki Arai, Takayuki Yamada Filing Date: October 31, 2012 Issue Date: November…
View full analysis →added 5/14/2026US Patent 8918127: Messaging Service in a Wireless Communication Network Title: Messaging service in a wireless communication network Assignee: Rembrandt Messaging Technologies LP Inventor: Graham Merrett Filing Date: February 7, 2013…
View full analysis →added 5/14/2026Analysis of U.S. Patent 9,008,055 As a senior U.S. patent analyst, this report provides a concise summary of United States Patent 9,008,055, including its key details and an overview of its independent claims. The information is based on…
View full analysis →added 4/27/2026Here's a concise summary of US Patent 9027032: Patent Number: US9027032B2 Title: System and method for providing additional functionality to existing software in an integrated manner Assignee: Damaka Inc. Inventors: Sivakumar Chaturvedi…
View full analysis →added 5/12/2026US Patent 9042448 Summary: Title: Moving picture encoding system, moving picture encoding method, moving picture encoding program, moving picture decoding system, moving picture decoding method, moving picture decoding program, moving…
View full analysis →added 5/14/2026US Patent 9055254, titled "On screen method and system for changing television channels," was issued to inventor Mohammed Selim. Here is a concise summary of the patent: Title: On screen method and system for changing television channels…
View full analysis →added 4/27/2026US Patent 9079107, titled "Game control method, game control device, and recording medium," was issued to GREE Holdings Inc. (formerly GREE Inc.). The sole named inventor is Kazuki Oono. The patent was filed on March 5, 2014, and issued on…
View full analysis →added 5/10/2026Here is a concise summary of US patent 9093473: Patent Number: US9093473B2 Title: Method for fabricating metal-oxide semiconductor transistor Current Assignee: Marlin Semiconductor Ltd Inventors: Ming-Te Wei, Wen-Chen Wu, Lung-En Kuo…
View full analysis →added 5/10/2026Here is a concise summary of US Patent 9,116,908: US Patent 9,116,908: System and methods for accelerated data storage and retrieval Title: System and methods for accelerated data storage and retrieval Assignee: Realtime Data LLC Inventor…
View full analysis →added 5/29/2026