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.
By industry
- US91338370 cases6/8 sections
US patent 9133837 has the following details: Title: Method of controlling a hydraulic system Assignee: Caterpillar Inc. Inventors: Mark David Anderson, Michael Anthony Spielman, JR. Filing Date: 2008-04-24 Issue Date: 2015-09-15 Abstract…
View full analysis →added 5/27/2026 - US91419600 cases6/8 sections
I'll search for US patent 9141960 in the USPTO database and check for any CAFC 2026 docket activity. The first search returned the patent and related litigation documents. The CAFC 2026 docket search returned no results. Let me check for…
View full analysis →added 9/1/2026 - US91435610 cases6/8 sections
I'll search for the current authoritative status of US Patent 9,143,561, including any USPTO and CAFC docket activity. US Patent 9,143,561 — Analyst Summary Verification note I searched for the exact number 9143561 (USPTO/Google Patents…
View full analysis →added 8/29/2026 - US91436420 cases6/8 sections
The initial searches did not surface USPTO or CAFC records—only an unrelated ChemSpider compound ID. Let me run more targeted queries. Summary of US Patent 9,143,642 (US9143642B2) Caveats on sourcing - USPTO/CAFC search results: I ran live…
View full analysis →added 9/4/2026 - US91545360 cases6/8 sections
I'll run searches as requested, then reconcile them against the authoritative full text provided. Let me pull the actual claim text for the '536 patent. US Patent 9,154,536 B2 — Analyst Summary Note on method: I ran the requested searches…
View full analysis →added 9/27/2026 - US91640320 cases6/8 sections
I'll search for authoritative sources on this patent number. Let me get the abstract and claims text, and check for any CAFC 2026 activity. Let me try to retrieve the actual claim text and any litigation involving this specific number.
View full analysis →added 9/22/2026 - US91647180 cases6/8 sections
I'll verify against live sources before summarizing. Let me pin down the '718 abstract and granted claims text specifically. Patent Profile — US 9,164,718 B2 Verification posture first (read before relying on anything below) - The…
View full analysis →added 9/26/2026 - US91722700 cases6/8 sections
I'll search for authoritative information on this specific patent number and any related 2026 litigation activity. Now let me check for any litigation or CAFC 2026 docket activity involving this patent. Let me check whether this specific…
View full analysis →added 9/26/2026 - US91851450 cases6/8 sections
I'll search for the specific patent number and related dockets, prioritizing live results over my training data. The initial searches confirm the patent identity but returned no CAFC 2026 dockets. Let me search more specifically for the…
View full analysis →added 8/29/2026 - US91851510 cases6/8 sections
I'll search for the specific patent number and related litigation/docket information. Let me dig deeper into the patent's litigation history and the specific patent number. US Patent 9,185,151 — Verification Summary Search scope note: I…
View full analysis →added 9/28/2026 - US91860510 cases6/8 sections
I'll run searches against USPTO-style sources and CAFC docket sources for this specific patent number. Let me run additional targeted searches on the patent number and any litigation/appeal activity. US 9,186,051 — Analyst Summary Scope…
View full analysis →added 9/22/2026 - US91980200 cases6/8 sections
I'll search authoritative sources for US 9,198,020 and any 2026 CAFC docket activity. Let me dig into the 2026 Federal Circuit activity and any PTAB proceedings specifically involving the '020 patent. Let me check for any PTAB or Federal…
View full analysis →added 9/29/2026 - US92021910 cases6/8 sections
Here is a concise summary of US Patent 9202191: Title: System and method for remote acquisition and delivery of goods Assignee: CONSUMERON LLC Inventors: Mark Baron Bowen, Michael Hays Filing Date: August 7, 2012 (Application number…
View full analysis →added 6/26/2026 - US92152750 cases6/8 sections
No CAFC 2026 dockets were found for US patent 9215275. Patent Summary for US9215275 Title: System and method to balance servers based on server load status Assignee: A10 Networks Inc. Inventors: Lalgudi Narayanan KANNAN, Ronald Wai Lun…
View full analysis →added 5/10/2026 - US92240830 cases6/8 sections
I'll search for current information on this patent number and any related litigation. Let me check for any CAFC 2026 activity and confirm bibliographic details. Let me verify the actual claim set and check for any Federal Circuit activity…
View full analysis →added 9/26/2026 - US92331650 cases6/8 sections
I'll search for current information on this patent number before summarizing. Let me dig deeper on litigation and the specific patent. Let me try additional targeted searches. US Patent 9,233,165 B2 — Summary Important sourcing note: I do…
View full analysis →added 9/13/2026 - US92401120 cases6/8 sections
I'll search for information on this patent, including any 2026 litigation activity. Let me run additional targeted searches to check court dockets and litigation databases. US Patent 9,240,112 — Search Findings and Summary Search coverage…
View full analysis →added 9/30/2026 - US92440350 cases6/8 sections
I'll search for the specific patent number and check for any CAFC docket activity. Let me check for any litigation, PTAB, or CAFC proceedings specifically involving this patent. Summary of US Patent 9,244,035 (verified against the…
View full analysis →added 9/24/2026 - US92585580 cases6/8 sections
I'll search for this specific patent number. Let me search for litigation/docket information and the specific claims. Let me search for CAFC 2026 activity and the actual claim language. Summary — US Patent 9,258,558 B2 Bibliographic data…
View full analysis →added 9/24/2026 - US92616660 cases6/8 sections
I'll verify the patent details and check for any litigation/docket activity before summarizing. Let me check specifically for litigation involving this patent family. US Patent 9,261,666 — Analyst Summary Bibliographic Data | Field | Value…
View full analysis →added 9/24/2026