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 letter →

Analyze a patent

Drop a US patent number — we’ll verify it on Google Patents and generate the full invalidity dossier.

By industry

  • Concise Summary of US Patent 7952645 Title: Video processing apparatus and mobile terminal apparatus Assignee: Maxell Ltd (Current Assignee, as of 2018-01-25 reassignment) (Previously Hitachi Ltd and Hitachi Maxell, Ltd.) Inventors: Kozo…

    View full analysis →added 5/14/2026
  • US patent 8050321, titled "Grouping of image frames in video coding," was issued to Nokia Inc.. The sole inventor listed is Miska Hannuksela. The patent was filed on January 25, 2006, and issued on November 1, 2011. Abstract: The patent…

    View full analysis →added 5/14/2026
  • Summary of US Patent 8209152B2 Bibliographic data | Field | Value | Source | |---|---|---| | Patent No. | US 8,209,152 B2 (8209152B2) | Google Patents; USPTO cover page PDF | | Title | Concurrent display systems and methods for aerial roof…

    View full analysis →added 9/4/2026
  • I will now provide a concise summary of US patent 8222516, drawing information from the provided patent text and supplementing with a search of USPTO and CAFC 2026 dockets for additional legal status and litigation details. US Patent…

    View full analysis →added 7/29/2026
  • I'll search for authoritative information on this patent number and check for any 2026 CAFC docket activity. Let me verify the PTAB outcomes for the two IPRs specifically naming 8352730 and check specifically for a 2026 CAFC docket naming…

    View full analysis →added 9/18/2026
  • Here's a concise summary of US Patent 8643513: Title: Data compression systems and methods Assignee: Realtime Data LLC Inventor: James J. Fallon Filing Date: June 6, 2011 Issue Date: February 4, 2014 Abstract: The patent describes systems…

    View full analysis →added 5/10/2026
  • I'll search for the specific patent number and any CAFC 2026 docket activity. No CAFC docket activity surfaced. Let me check USPTO/litigation specifics. Let me verify CAFC activity by party name and check the patent's term extension. US…

    View full analysis →added 8/3/2026
  • Here is a concise summary of US patent 8842080: US Patent 8842080: User Interface with Screen Spanning Icon Morphing Title: User interface with screen spanning icon morphing Assignee: Multifold International Inc Pte Ltd (Current), Z124 Co…

    View full analysis →added 6/15/2026
  • US Patent 8904030, titled "Automatic multimedia upload for publishing data and multimedia content," was issued on December 2, 2014, from an application filed on June 4, 2014, under application number US14/295,353. The original and current…

    View full analysis →added 6/15/2026
  • I'll search for authoritative information on this patent number. Now let me check for litigation and any CAFC 2026 docket activity. Let me do a final check for any Federal Circuit 2026 appeal activity specifically involving this patent. US…

    View full analysis →added 9/24/2026
  • US Patent 9,036,181 B2 — Summary Search notes I searched the USPTO-facing sources (Google Patents, USPTO.report, Unified Patents portal, PTACTS prosecution documents) and for CAFC 2026 docket entries. I found no CAFC 2026 appeal docket for…

    View full analysis →added 8/29/2026
  • Summary of U.S. Patent No. 9,042,811 (US9042811B2) Bibliographic Data | Field | Value | |---|---| | Title | Specification of Smart Wireless Television for Rendering Digital Content | | Assignee (at grant) | Flexiworld Technologies, Inc…

    View full analysis →added 8/28/2026
  • I'll search for authoritative information on this patent number across USPTO and litigation sources. Let me retrieve the exact claim text and check litigation/docket status specifically for the '188 patent. Let me verify the current claim…

    View full analysis →added 9/18/2026
  • Here's a concise summary of US patent 9082239: Title: Intelligent vehicle for assisting vehicle occupants Assignee: AutoConnect Holdings LLC Inventors: Christopher P. Ricci Filing Date: April 15, 2014 Issue Date: July 14, 2015 Abstract: A…

    View full analysis →added 5/12/2026
  • US Patent 9,129,376 B2 — Summary Searches performed I searched for the exact identifier 9129376 (and US9129376B2 / 9,129,376) in patent databases and litigation/CAFC sources, and searched the CAFC 2026 docket for this patent number. My…

    View full analysis →added 9/4/2026
  • Here is a concise summary of US patent 9191083: Title: Wireless device with multichannel data transfer Assignee: SMART MOBILE TECHNOLOGIES LLC Inventors: Sanjay K Rao, Sunil K Rao, Raman K Rao Filing Date: May 11, 2015 Issue Date: November…

    View full analysis →added 6/15/2026
  • I'll search for authoritative information on this patent, including litigation/docket data. Let me check for Federal Circuit (CAFC) activity and any PTAB/IPR challenges specific to this patent. Let me check for PTAB/IPR challenges and any…

    View full analysis →added 9/19/2026
  • I'll verify the patent-identifying data and check the 2026 CAFC docket situation before summarizing. Now let me get the actual independent claim text and check the 2026 CAFC docket status. Sourcing & integrity notes (read first) Three…

    View full analysis →added 8/30/2026
  • US Patent 9647918 provides a mobile device and method for attributing media services network usage to the requesting application. Here's a concise summary: Title: Mobile device and method attributing media services network usage to…

    View full analysis →added 5/12/2026
  • The CAFC search returned no direct hits. Let me search further for the claims text and the Federal Circuit appeal associated with this patent. I found the CAFC docket (24-1630, Rule 36 affirmance on 2026-03-09). Now let me retrieve the…

    View full analysis →added 8/29/2026