The catalog
Patent invalidity dossiers.
7,163 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
I'll search for authoritative information on this patent number. Let me search for the USPTO record and any CAFC 2026 docket activity. Summary of US 8,764,172 B2 Important caveat on sourcing: I was able to retrieve the full authoritative…
View full analysis →added 9/30/2026I'll run targeted searches for the specific patent number before writing the summary. Let me pull the claim text and docket information specifically. Let me try to retrieve the complete claim 15 text and check for any CAFC activity. US…
View full analysis →added 9/19/2026I'll search for litigation and docket information on this patent, then summarize the patent itself from the authoritative text provided. Let me run a few more targeted searches. Search Results: Litigation and Docket Check I searched for US…
View full analysis →added 9/28/2026I'll search for litigation/docket information on this specific patent, then summarize. Let me check for any litigation, PTAB, or Federal Circuit activity specifically involving this patent. Summary — US Patent 8,775,198 B2 I checked for…
View full analysis →added 9/28/2026I'll search for authoritative records on this specific patent number, including any CAFC/litigation activity. Let me run a couple more targeted searches on litigation and USPTO records for this exact number. US 8,775,398 B2 — Summary Note…
View full analysis →added 9/28/2026I'll verify the patent details and check for any litigation/docket activity before summarizing. Search results for US 8,775,857 Important caveat on scope: I searched for authoritative records on this specific number. I did not find any…
View full analysis →added 9/28/2026I'll search for authoritative information on this patent number. Let me run additional targeted searches for litigation and docket records. I have the authoritative full text. Let me do one more check on claim language and any 2026…
View full analysis →added 9/28/2026I'll search for authoritative information on this patent and any 2026 CAFC activity. Let me verify the independent claims and the 2026 appellate posture more precisely. Let me check the specific 2026 docket number listed for this patent…
View full analysis →added 9/28/2026I'll search for the specific patent number and any 2026 CAFC docket activity. Let me run more targeted searches on the patent and on 2026 CAFC activity. Search Report — US Patent No. 8,805,418 (interpreted literally as "8805418") Search…
View full analysis →added 9/24/2026I'll search for current information on this patent, including any litigation or CAFC docket activity. Let me search for the specific litigation and any appellate activity. Let me check for any Federal Circuit appellate activity and the…
View full analysis →added 9/28/2026I'll search for the specific patent number and related docket information. Let me search for the abstract and claims text, and verify the litigation status. Let me check for CAFC 2026 appellate dockets and the abstract text. Verification…
View full analysis →added 9/29/2026Here is a concise summary of US patent 8855723: Title: Temporal incoming communication notification management Assignee: STASIT LLC Inventors: Peter J. Lynch, III Filing Date: 2011-09-25 Issue Date: 2014-10-07 Abstract: The patent…
View full analysis →added 5/10/2026US patent 8861349, titled "Broadband communications device," was invented by Eric M. DeLangis. The application, US13/531,294, was filed on June 22, 2012, and the patent was issued on October 14, 2014. The original assignee was…
View full analysis →added 5/14/2026I'll search for patent US 8895586 in USPTO and CAFC databases. Let me dig into the claims and any 2026 litigation activity. Let me check for specific 2026 CAFC activity and the exact claim structures. US Patent 8,895,586 — Analyst Summary…
View full analysis →added 9/17/2026I'll search for authoritative information on this specific patent number and any 2026 CAFC activity. Let me dig deeper into the 2026 docket activity and the reexamination/PTAB status specifically for the '260 patent. One more targeted…
View full analysis →added 10/1/2026I'll search for authoritative records on this patent number before summarizing. Let me check for litigation/PTAB/CAFC activity and the full claim set. Let me pull the full claim set to identify independent claims accurately. US Patent…
View full analysis →added 9/29/2026Here is a concise summary of US patent 8923754: Title: Intelligent broadband relay for wireless networks Assignee: Massively Broadband LLC (Note: The listed assignee may be inaccurate as Google has not performed a legal analysis and makes…
View full analysis →added 5/13/2026I'll verify the patent details against live sources, including the USPTO/CAFC dockets mentioned, and try to retrieve the actual claim text (the provided description is truncated before the claims). Let me retrieve the remaining independent…
View full analysis →added 9/19/2026I'll verify the patent details and check for any 2026 litigation activity before summarizing. US Patent 8,934,610 B2 — Summary Verification note: I searched for litigation and CAFC docket activity tied to this specific number and found no…
View full analysis →added 9/28/2026I'll run searches against the specific patent number and related docket/litigation records. US 8,996,579 B2 — Verified Data (as of April 26, 2026) Note on method: I searched for the literal identifier 8996579 and cross-checked the…
View full analysis →added 9/29/2026