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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- US96154530 cases6/8 sections
I'll search for authoritative information on this specific patent number. Let me search specifically for litigation and post-grant activity, and verify the claims text. Let me check specifically for any litigation, PTAB, or Federal Circuit…
View full analysis →added 9/26/2026 - US96196010 cases6/8 sections
US Patent 9619601 (US9619601B1) provides techniques for generating a control and data flow graph (CDFG) specifically adapted for hardware description languages (HDLs). Here's a concise summary: Title: Control and data flow graph generation…
View full analysis →added 8/7/2026 - US96198640 cases6/8 sections
Let me also search for any CAFC docket activity involving this patent number, as requested. Summary — U.S. Patent No. 9,619,864 (US9619864B2) Bibliographic data | Field | Value | |---|---| | Title | Image processing apparatus and method…
View full analysis →added 9/3/2026 - US96253470 cases6/8 sections
I'll verify the patent details and check for any litigation activity. US Patent 9,625,347 B2 — Summary Identifier note: I treated the number literally as 9,625,347 (US9625347B2). Searches returned only this patent and its own…
View full analysis →added 9/24/2026 - US96253490 cases6/8 sections
I'll search for authoritative information on this specific patent number, including any litigation activity. Let me try additional search formulations. Let me do a final targeted check for any litigation or post-grant proceedings. Summary…
View full analysis →added 9/24/2026 - US96255330 cases6/8 sections
I'll search for authoritative information on this patent, including any 2026 litigation dockets. Let me get the exact claim text and check specifically for any litigation involving this patent number. US Patent 9,625,533 B2 — Analyst…
View full analysis →added 9/26/2026 - US96332930 cases6/8 sections
I'll verify the details against public sources before summarizing. Let me retrieve the actual claim text to ground the independent-claim summaries. Let me pull the remaining independent claims to ground my summary. Sourcing note and scope…
View full analysis →added 9/24/2026 - US96356750 cases6/8 sections
I'll cross-check the provided full text against external sources, then summarize. Let me check for any litigation or 2026 Federal Circuit activity tied to this specific patent. One more check on family/related records and any appellate…
View full analysis →added 9/17/2026 - US96386340 cases6/8 sections
I'll search for authoritative information on this specific patent number. Now let me check for litigation and CAFC 2026 docket activity. Let me make one more targeted check for any litigation or PTAB proceedings. Search scope and…
View full analysis →added 9/24/2026 - US96450640 cases6/8 sections
I'll search for this specific patent number across the requested sources. Let me check for litigation and pull the claim text. Let me retrieve the full claim set to identify all independent claims. Summary — US 9,645,064 B1 Important scope…
View full analysis →added 9/24/2026 - US96512390 cases6/8 sections
Here's a concise summary of US Patent 9651239, "LED lamp and heat sink": Title: LED lamp and heat sink Assignee: Current: Prosperina Ventures LLC, Cree Lighting USA LLC Original: Cree Inc Inventors: Paul Kenneth Pickard, Bart P. Reier…
View full analysis →added 8/6/2026 - US96514750 cases6/8 sections
I'll search for the specific patent number and check for any litigation/docket activity. Let me run a few more targeted checks — litigation/PTAB activity, and verification of the patent's bibliographic data. US 9,651,475 B2 — Summary…
View full analysis →added 9/24/2026 - US96514760 cases6/8 sections
I'll search for authoritative information on this specific patent number, including any 2026 litigation activity. Let me check for any litigation activity involving this patent. US Patent 9,651,476 — Summary Caveat on sourcing: I relied on…
View full analysis →added 9/24/2026 - US96549210 cases6/8 sections
I'll search for authoritative information on this patent, including any litigation or Federal Circuit activity. Let me search for the claim set and any litigation/CAFC activity specifically tied to this patent. Let me pull the actual claim…
View full analysis →added 9/26/2026 - US96610570 cases6/8 sections
I'll search for the specific patent and check for any litigation/docket activity. Let me check for any litigation/docket records and try to retrieve the claims text. US Patent 9,661,057 B2 — Summary Important caveat up front: The…
View full analysis →added 9/24/2026 - US96645860 cases6/8 sections
I'll search for authoritative information on this patent, including any litigation activity. Let me run a couple more targeted searches for litigation/enforcement activity and USPTO records. US Patent 9,664,586 — Analyst Summary Source…
View full analysis →added 9/24/2026 - US96645870 cases6/8 sections
I'll search for information on this specific patent number. I found solid confirmation of the patent. Let me check for any CAFC 2026 docket activity or litigation. No litigation hits so far. Let me run a few more targeted checks to be…
View full analysis →added 9/24/2026 - US96702770 cases6/8 sections
I'll search for authoritative information on this specific patent number. Let me check for any litigation, PTAB, or CAFC activity involving this specific patent. Let me verify the granted claims (they can differ from the published…
View full analysis →added 9/20/2026 - US96713180 cases6/8 sections
I'll verify against live sources, then summarize from the authoritative patent text provided. US 9,671,318 B1 — "Specimen collector" Verification status: Confirmed against the full granted text (Google Patents, fetched 2026-09-24) and…
View full analysis →added 9/24/2026 - US96713190 cases6/8 sections
I'll search for this specific patent and check for any 2026 CAFC docket activity. Now let me check for any CAFC 2026 litigation or docket activity involving this patent. Search results — US 9,671,319 B1 Important scope note: I searched for…
View full analysis →added 9/24/2026