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.
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- US103379720 cases6/8 sections
I'll run targeted searches for this specific patent number and related litigation/docket records. Let me check for any litigation, CAFC appeals, and the USPTO/Justia records directly. Summary Report — US Patent No. 10,337,972 Search scope…
View full analysis →added 9/24/2026 - US103397460 cases6/8 sections
I'll verify the record and look for claim text and any 2026 litigation activity for this specific patent number. Let me pull the actual claim text and check for any Federal Circuit activity. US 10,339,746 B1 — Summary Important preliminary…
View full analysis →added 9/26/2026 - US103414210 cases6/8 sections
I'll search for the specific patent number and related litigation dockets. Let me search for litigation/docket activity and the actual claim text. Let me try to pull the exact claim language and check for any litigation involving this…
View full analysis →added 9/24/2026 - US103427040 cases6/8 sections
I'll verify current status via search, then summarize from the authoritative patent text. US 10,342,704 B2 — Verification Summary Scope note: I searched for US 10,342,704 specifically and did not find any CAFC 2026 docket or district-court…
View full analysis →added 9/28/2026 - US103452460 cases6/8 sections
I'll verify the current status of this patent against live sources before summarizing. Verification and scope of search I checked live sources for litigation and appellate activity on US 10,345,246 before summarizing. - USPTO / Google…
View full analysis →added 9/24/2026 - US103452470 cases6/8 sections
I'll search for authoritative information on this patent, including USPTO records and any CAFC 2026 docket activity. Let me run additional targeted searches for litigation/docket activity and the official USPTO record. Based on the…
View full analysis →added 9/24/2026 - US103460870 cases6/8 sections
The first search returned an unrelated Apple design patent (D593,087), not our target. Let me run additional targeted searches. Bibliographic data is confirming. Now let me check for any CAFC 2026 litigation involving this specific patent…
View full analysis →added 8/28/2026 - US103527970 cases6/8 sections
I'll run targeted searches for this patent number against USPTO and CAFC sources. Let me run a few more targeted searches for USPTO records and any litigation/docket activity. Search notes and caveats (read first) - I searched for the…
View full analysis →added 9/24/2026 - US103592650 cases6/8 sections
I'll first check for any current litigation or docket references, then summarize the patent from the authoritative full text provided. Search results / docket check I ran targeted searches for "10359265" and for CAFC 2026 activity…
View full analysis →added 9/24/2026 - US103617890 cases6/8 sections
I'll search for authoritative information on this specific patent, including any 2026 litigation activity. Let me dig deeper into the litigation and any Federal Circuit activity. US 10,361,789 B2 — Summary Important prefatory note on…
View full analysis →added 9/19/2026 - US103687950 cases6/8 sections
I'll search for the specific patent number and any related litigation records. Let me run additional targeted searches for USPTO records and any litigation. Let me do a final check for any PTAB or appellate proceedings specifically…
View full analysis →added 9/26/2026 - US103715690 cases6/8 sections
I'll verify the patent details against live sources, including any litigation/docket activity. Summary of US Patent 10,371,569 B2 Search note: I searched Google Patents/Justia for the assertion, and searched for CAFC 2026 docket activity…
View full analysis →added 9/24/2026 - US103715700 cases6/8 sections
I'll search for authoritative information on this patent number, including any litigation or CAFC activity. Let me search more specifically for litigation and CAFC docket activity involving this patent. Let me do a final targeted check for…
View full analysis →added 9/24/2026 - US103715710 cases6/8 sections
I'll search for authoritative information on this patent number, including any 2026 CAFC docket activity. Let me check specifically for any 2026 litigation or CAFC docket activity, and verify the assignee/inventor details independently…
View full analysis →added 9/24/2026 - US103745290 cases6/8 sections
I'll search for authoritative information on this specific patent number. Let me verify whether any Federal Circuit 2026 appeal specifically involves this patent. US Patent 10,374,529 — Analyst Summary Search scope note: I searched public…
View full analysis →added 9/24/2026 - US103747400 cases6/8 sections
I'll search for this specific patent number across the requested sources. Let me search more specifically for litigation/docket and assignment records. Found a potentially relevant 2026 case. Let me verify whether patent 10374740 is…
View full analysis →added 9/24/2026 - US103763860 cases6/8 sections
I'll search for this specific patent and any related 2026 docket activity. Let me run several targeted queries. I have good initial results. Let me dig deeper on the specific claims of the '386 patent and the 2026 docket activity. US…
View full analysis →added 10/1/2026 - US103861840 cases6/8 sections
I'll verify the patent's status and check for any litigation before summarizing. US Patent 10,386,184 — Verification Summary Source of record: Google Patents full text (fetched 2026-09-24) at…
View full analysis →added 9/24/2026 - US103861860 cases6/8 sections
I'll search for authoritative information on this specific patent number. Let me search specifically for any litigation or PTAB proceedings involving this patent number. Let me do two final targeted checks for any court or PTAB proceeding…
View full analysis →added 9/24/2026 - US103988160 cases6/8 sections
I'll check live sources for the patent's current docket/assignment status, then combine with the authoritative text I have. US 10,398,816 B2 — "Breast pump system with flange" Bottom line: This is a Willow Innovations (formerly ExploraMed…
View full analysis →added 9/28/2026