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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- US94705600 cases6/8 sections
I'll search for the specific patent number and check for any litigation or docket activity. Let me check specifically for litigation/docket activity and USPTO records. US Patent 9,470,560 — Verification Summary Sources searched: Google…
View full analysis →added 9/24/2026 - US94772190 cases6/8 sections
I'll search for authoritative information on this patent number, including any 2026 litigation activity. US 9,477,219 B2 — Search Results and Summary 1. Docket / litigation search result (most important finding) I found no 2026 CAFC docket…
View full analysis →added 9/24/2026 - US94957880 cases6/8 sections
I'll search for authoritative information on this patent, including any 2026 litigation activity. Summary of US Patent 9,495,788 B2 Sourcing note: The following is drawn from the authoritative full text supplied (Google Patents, fetched…
View full analysis →added 9/26/2026 - US95131910 cases6/8 sections
I'll search for litigation and current-status information on this specific patent number, then compile the summary. Let me make one more targeted check for any litigation record. US Patent 9,513,191 — Summary Important scoping note up…
View full analysis →added 9/24/2026 - US95163760 cases6/8 sections
I'll research US patent 9516376 across the sources you specified. Now let me check for CAFC 2026 docket activity and the litigation referenced on the patent record. Let me verify whether the IPRs at issue in the Federal Circuit appeal…
View full analysis →added 10/1/2026 - US95221630 cases6/8 sections
Here's a concise summary of US Patent 9522163: Title: Methods of treating hepatitis Assignee: Yale University and University of Pittsburgh Inventors: Leo E. Otterbein, Augustine M. K. Choi, Brian Scott Zuckerbraun Filing Date: December 2…
View full analysis →added 5/10/2026 - US95322610 cases6/8 sections
I'll search for authoritative information on this specific patent number. Let me try more targeted searches for litigation and claim details. Let me pull the actual claim text and abstract for this specific patent. Summary of Findings on…
View full analysis →added 9/24/2026 - US95379000 cases6/8 sections
Here's a concise summary of US patent 9537900: US Patent 9537900 Title: Systems and methods for serving application specific policies based on dynamic context Assignee: Avaya Inc. Inventors: Sunil Menon, Shailesh Patel Filing Date…
View full analysis →added 8/11/2026 - US95414340 cases6/8 sections
I'll search for authoritative information on this patent, including any 2026 CAFC docket activity. Let me check specifically for litigation, PTAB, or appellate activity involving this patent. Search coverage and limits (read first) I ran…
View full analysis →added 9/24/2026 - US95425420 cases6/8 sections
I'll search for this specific patent number in relevant sources. US 9,542,542 B2 — Summary Important scoping note first (read this): I was asked to search the USPTO database and CAFC 2026 dockets for patent number 9542542 only. I could not…
View full analysis →added 9/29/2026 - US95628550 cases6/8 sections
I'll search for the specific patent and check for any CAFC 2026 docket activity. Let me dig deeper for the specific claims and any litigation or CAFC activity involving this exact patent. Let me try to retrieve the exact claim language and…
View full analysis →added 9/24/2026 - US95703890 cases6/8 sections
I'll search for the specific patent number and check for any litigation or CAFC activity. Let me try more targeted searches for USPTO records, litigation, and CAFC dockets. US Patent 9,570,389 — Search Results and Summary Search scope…
View full analysis →added 9/24/2026 - US95708590 cases6/8 sections
I'll search for authoritative information on US 9570859. Let me search for litigation and any CAFC 2026 activity involving this specific patent. Let me get the complete claim set to identify all independent claims. Let me check…
View full analysis →added 10/1/2026 - US95749720 cases6/8 sections
I'll search for authoritative records on US 9574972 and any associated litigation. Let me check specifically for litigation/docket records and USPTO status. US Patent 9,574,972 — Analyst Summary Search scope note: I searched for the exact…
View full analysis →added 9/24/2026 - US95785700 cases6/8 sections
Let me search more specifically for CAFC activity involving this patent in 2026. I have gathered what's available. Note up front: my searches did not surface any CAFC 2026 docket entries for this patent (the CAFC-specific queries returned…
View full analysis →added 9/8/2026 - US95842840 cases6/8 sections
I'll search for the specific patent number and check litigation dockets. Let me check specifically for litigation/docket activity involving this patent. US 9,584,284 B2 — Analyst Summary Sourcing note. The summary below is grounded in the…
View full analysis →added 9/17/2026 - US95879790 cases6/8 sections
I'll run targeted searches for this specific patent number and check for any CAFC 2026 activity. Search scope and results limitation (read first) - I ran targeted searches against the patent number "9587979" (Google Patents, Justia, USPTO…
View full analysis →added 9/24/2026 - US95966480 cases6/8 sections
Here's a concise summary of US Patent 9596648, along with the results from the requested database searches: US Patent 9,596,648 Summary Title: Unified beacon format Current Assignee: Velocity Communication Technologies LLC Original…
View full analysis →added 8/3/2026 - US96043590 cases6/8 sections
I'll search for the specific patent number and any CAFC 2026 docket activity. Now let me check for any CAFC 2026 docket activity and litigation involving this patent. Let me look for the independent claim text and check for CAFC 2026…
View full analysis →added 9/29/2026 - US96086750 cases6/8 sections
I'll research this patent across the provided sources and live search. Let me verify the litigation status and related family details with additional searches. US Patent 9,608,675 — Analyst Summary 1. Identification | Field | Value |…
View full analysis →added 9/26/2026