The catalog
Patent invalidity dossiers.
7,175 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.
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- US114024400 cases6/8 sections
I'll search for authoritative information on US 11,402,440, including any 2026 CAFC docket activity. Let me check for any litigation or CAFC docket activity specific to this patent. US 11,402,440 B2 — Verified Summary Caveat on scope of…
View full analysis →added 9/24/2026 - US114024420 cases6/8 sections
I'll search for the specific patent number and any related litigation, then summarize. Search scope and a caveat up front I ran targeted queries for the literal string 11402442 together with terms for litigation, PTAB, and Federal Circuit…
View full analysis →added 9/24/2026 - US114024430 cases6/8 sections
I'll search for this specific patent number across USPTO and CAFC docket sources. Let me probe specifically for litigation or PTAB proceedings tied to this patent number, and verify the CAFC "'243" reference isn't a different patent. Let…
View full analysis →added 9/24/2026 - US114024440 cases6/8 sections
I'll run targeted searches for this patent number, including its litigation/docket footprint. Initial results were irrelevant (the first returned unrelated EPO/AU documents; the docket query returned nothing). Let me try more precise…
View full analysis →added 9/24/2026 - US114024450 cases6/8 sections
I'll search for this specific patent number and any related litigation activity. Let me check for any litigation, PTAB, or Federal Circuit activity tied to this patent, plus assignment records. US 11,402,445 — "Electron intrinsic spin…
View full analysis →added 9/24/2026 - US114024500 cases6/8 sections
I'll search for the specific patent number as requested. Let me run a couple more targeted searches for any litigation/CAFC activity. Summary — US 11,402,450 B2 Important caveat on scope of search: Google Patents and general web sources…
View full analysis →added 9/24/2026 - US114024530 cases6/8 sections
I'll verify details against live sources before summarizing. Let me check for the actual claim set and any litigation specific to this patent. US 11,402,453 B2 — Verification Summary Note on scope: I searched for this exact number (US…
View full analysis →added 9/24/2026 - US114024540 cases6/8 sections
I'll search for this specific patent number to verify the details and check for any litigation activity. Let me check for the actual claim set and any litigation specifically naming this patent. Let me try to retrieve the granted claim…
View full analysis →added 9/24/2026 - US114024550 cases6/8 sections
I'll search for the specific patent number, including any litigation activity. Let me check specifically for any litigation, PTAB, or Federal Circuit activity involving this patent. Search results for US Patent No. 11,402,455 A…
View full analysis →added 9/24/2026 - US114024560 cases6/8 sections
I'll verify this patent against live sources, including any 2026 CAFC/litigation activity. Let me run a couple more targeted checks for litigation/PTAB activity specifically on this patent number. Verification summary — US 11,402,456…
View full analysis →added 9/24/2026 - US114024580 cases6/8 sections
I'll search for information on this patent number, including any litigation or CAFC dockets. Let me check for any litigation or post-grant proceedings specific to this patent. Summary — U.S. Patent No. 11,402,458 (interpreted literally as…
View full analysis →added 9/24/2026 - US114024610 cases6/8 sections
I'll search for litigation and docket information on this specific patent number, then compile the summary. US 11,402,461 B2 — Summary Verification note on the search: I searched specifically for patent number 11402461 (and variants "US…
View full analysis →added 9/24/2026 - US114024620 cases6/8 sections
I'll search for authoritative information on this patent number, including any litigation or CAFC docket activity. Let me check for any litigation or PTAB proceedings involving this patent. US Patent 11,402,462 — Analyst Summary Search…
View full analysis →added 9/24/2026 - US114024650 cases6/8 sections
US 11,402,465 B2 — Patent Summary Verification note: My searches of the web (Google Patents / USPTO PDF / patent family data) return exactly one hit for this identifier: the patent below. I found no result tying US 11,402,465 to a CAFC…
View full analysis →added 9/24/2026 - US114024660 cases6/8 sections
I'll search for authoritative information on this specific patent number. Search result: no litigation or appellate docket found I searched for the specific number 11402466 / "11,402,466" against litigation and CAFC material. No CAFC 2026…
View full analysis →added 9/24/2026 - US114024670 cases6/8 sections
I'll search for the patent and any related litigation. Let me search for CAFC/litigation activity and the claim text. Let me check specifically for litigation and CAFC 2026 activity involving this patent or its owner. US 11,402,467 —…
View full analysis →added 9/24/2026 - US114024680 cases6/8 sections
I'll research this patent. Let me search for authoritative sources. Let me run more targeted searches. Let me check for any litigation or PTAB/Court activity involving this specific patent. Research Summary — US 11,402,468 B2 Search scope…
View full analysis →added 9/24/2026 - US114024710 cases6/8 sections
I'll search for this specific patent number and check for any litigation activity. Patent Analysis Report — US 11,402,471 B2 Scope note: All patent bibliographic and claim data below is taken from the authoritative full text you supplied…
View full analysis →added 9/24/2026 - US114024730 cases6/8 sections
I'll search for authoritative information on this patent number before summarizing. Let me search for the claims text and any 2026 CAFC docket activity. Let me try to retrieve the actual claim text for the independent claims. Summary of US…
View full analysis →added 9/24/2026 - US114024740 cases6/8 sections
I'll search for this specific patent number and any associated litigation activity. Search Results for US 11,402,474 Litigation/docket search — negative finding. I searched for CAFC 2026 docket activity, PTAB proceedings, and…
View full analysis →added 9/24/2026