The catalog
Patent invalidity dossiers.
7,244 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
- US87623890 cases6/8 sections
I'll search for authoritative information on this patent number, including any litigation activity. The initial searches returned nothing. Let me try alternate queries. Let me get the actual claim text and check for any litigation/docket…
View full analysis →added 9/24/2026 - US87747550 cases6/8 sections
I'll verify this patent against live sources, including any 2026 CAFC activity, before summarizing. Let me check for litigation and appellate activity, plus the claim text. Let me try to pull the actual claim text and any litigation…
View full analysis →added 9/30/2026 - US87748340 cases6/8 sections
US Patent 8774834: System for Location-Based Services Title: System for providing location-based services in a wireless network, such as locating sets of desired locations Current Assignee: LOCAL INTEREST, LLC [cite…
View full analysis →added 7/16/2026 - US87750890 cases6/8 sections
I'll run targeted searches for this patent number, including any litigation/docket activity. Let me check specifically for any litigation or PTAB/Court of Appeals activity on this number. US 8,775,089 B2 — Verification Summary Bottom line…
View full analysis →added 9/28/2026 - US87751460 cases6/8 sections
US 8775146 B2 — Crystal Structure of Human Alpha-N-Acetylglucosaminidase Parties and dates. Inventors: Muthuraman Meiyappan, Michael F. Concino, Angela W. Norton. Original assignee: Shire Human Genetic Therapies, Inc.; current assignee…
View full analysis →added 9/28/2026 - US87753070 cases6/8 sections
I'll search for the specific patent number and any litigation activity. Search Results Summary — US Patent No. 8,775,307 Sourcing note I ran targeted searches for this exact number against Google Patents/Justia/FreePatentsOnline, docket…
View full analysis →added 9/28/2026 - US87755740 cases6/8 sections
I'll search for docket/litigation information on this specific patent, then summarize. The first searches returned results for unrelated patents (e.g., 8,073,557). Let me search more precisely. US Patent 8,775,574 — Summary Bottom line…
View full analysis →added 9/28/2026 - US87755820 cases6/8 sections
I'll search for the specific patent number and check for any CAFC 2026 docket activity. Let me run additional targeted searches to confirm there is no distinct 2026 CAFC activity for this specific number. Search results summary Important…
View full analysis →added 9/28/2026 - US87759040 cases6/8 sections
I'll search for the specific patent number and any 2026 CAFC docket activity. Let me do additional targeted searches for any 2026 court activity and assignee changes. US 8,775,904 B2 — Summary Important note on scope: My tools are web…
View full analysis →added 9/28/2026 - US87767720 cases6/8 sections
I'll search for litigation/litigation-adjacent records and confirm the bibliographic data before summarizing. Let me run a few more targeted searches for any litigation, PTAB, or assignment records and to confirm the assignee status…
View full analysis →added 9/19/2026 - US87808870 cases6/8 sections
US Patent 8780887, titled "Method of network-based communication in virtual network environment," was filed on September 16, 2011, and issued on July 15, 2014. The patent is assigned to Electronics and Telecommunications Research Institute…
View full analysis →added 5/12/2026 - US87822680 cases6/8 sections
I'll search for authoritative information on US 8782268, including any 2026 CAFC docket activity. Let me dig into the claim text and check for any 2026 Federal Circuit activity specifically naming this patent. Let me retrieve the actual…
View full analysis →added 9/29/2026 - US87852860 cases6/8 sections
I'll search for litigation and docket information on this specific patent before summarizing. Let me run additional targeted searches to check for litigation or PTAB proceedings involving this specific patent. Search results note (docket…
View full analysis →added 9/24/2026 - US87886900 cases6/8 sections
Patent Overview — US8788690B2 Title: Systems and methods for providing content and services on a network system Patent number / application: US8788690B2, application US14/094,712; publication US20140089182A1. Inventors: Joel E. Short…
View full analysis →added 10/1/2026 - US87937580 cases6/8 sections
Patent Overview: US8793758B2 Title: Security, fraud detection, and fraud mitigation in device-assisted services systems Patent Number: US8793758B2 Application Number: US13/309,463 Publication Number (pre-grant): US20120167162A1 Inventors…
View full analysis →added 9/24/2026 - US87968840 cases6/8 sections
US Patent 8796884, titled "Energy conversion systems with power control," was issued on August 5, 2014, from an application filed on February 10, 2009. The inventors are Ravindranath Naiknaware, Vincenzo DiTommaso, Triet Tu Le, Robert D…
View full analysis →added 5/24/2026 - US87989530 cases6/8 sections
I'll search for authoritative information on US patent 8798953, including any litigation or CAFC docket activity. US Patent 8,798,953 — Analyst Summary Sourcing note I searched for this patent number across general web and patent-database…
View full analysis →added 9/24/2026 - US87994510 cases6/8 sections
I'll verify the bibliographic details and check for any 2026 CAFC docket activity specific to patent 8,799,451. US 8,799,451 B2 — Concise Summary Scope note: I searched only for the literal number 8799451 / US 8,799,451 B2 and did not…
View full analysis →added 8/29/2026 - US88015330 cases6/8 sections
I'll search for authoritative information on this specific patent number. Let me check for any litigation or CAFC docket activity involving this patent. US Patent 8,801,533 B2 — Analyst Summary Sourcing note: My available tool is general…
View full analysis →added 9/26/2026 - US88123270 cases6/8 sections
I'll search for authoritative information on this patent number. Let me try alternate search phrasings. Now let me check for any CAFC 2026 litigation involving this patent. US Patent 8,812,327 — Analyst Summary Search note. My live…
View full analysis →added 9/24/2026