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
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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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- US60054750 cases6/8 sections
I'll verify the patent details against live sources before summarizing. Let me run a couple of targeted checks for any litigation or CAFC activity. US Patent 6,005,475 — Verification & Summary Verification note on scope: I searched public…
View full analysis →added 9/24/2026 - US60061480 cases6/8 sections
I'll search for the specific patent number as requested, including any litigation/docket activity. US Patent 6,006,148 — Analyst Report Search performed I ran two targeted searches: (1) the exact patent number plus title, and (2) 6006148…
View full analysis →added 9/21/2026 - US60087960 cases6/8 sections
I'll search for authoritative information on this patent number and any 2026 CAFC activity. Summary of US Patent 6,008,796 A note on scope and method. I pulled the authoritative full text of this patent (Google Patents, fetched 2026-09-24)…
View full analysis →added 9/24/2026 - US60090880 cases6/8 sections
I'll search for this specific patent number and any CAFC 2026 docket references. The first result is unrelated (a different '908 patent in a Texas case). Let me run additional targeted searches to verify the specific patent and check for…
View full analysis →added 9/9/2026 - US60144370 cases6/8 sections
I'll search for authoritative records on this specific patent number. Let me run a few more targeted checks for any 2026 litigation activity and current USPTO status. US 6014437 — Verification Summary Search scope notes (read first). I…
View full analysis →added 9/24/2026 - US60164760 cases6/8 sections
I'll research this patent across the specified sources. US Patent 6,016,476 — Analyst Summary Source of record used: the full text of US6016476A supplied in the task (https://patents.google.com/patent/US6016476/en), cross-checked against…
View full analysis →added 9/24/2026 - US60183970 cases6/8 sections
I'll verify the key facts and check for any litigation before summarizing. Identification Note on identifiers: I searched on the exact number 6018397. All results below pertain to that patent only; no similar numbers were substituted. |…
View full analysis →added 9/17/2026 - US60187390 cases6/8 sections
I'll search for authoritative records on this patent, including any 2026 CAFC docket activity. Search results: US Patent 6,018,739 Search scope note: I searched for the exact number 6018739 / 6,018,739. I found no CAFC 2026 docket entry…
View full analysis →added 9/26/2026 - US60257800 cases6/8 sections
I'll search for authoritative information on US patent 6025780, including any 2026 CAFC litigation activity. Let me search more specifically for litigation and docket activity involving this patent. Let me retrieve the full claim set to…
View full analysis →added 9/29/2026 - US60291950 cases6/8 sections
US Patent 6,029,195, titled "System for customized electronic identification of desirable objects," was invented by Frederick S. M. Herz. The patent was filed on December 5, 1997, and issued on February 22, 2000. Current assignees include…
View full analysis →added 7/3/2026 - US60300740 cases6/8 sections
I'll check live sources for any litigation or docket activity before summarizing. Let me try a few additional targeted queries to make sure nothing is being missed. US 6,030,074 — Summary Caveat on sourcing: Live searches returned no CAFC…
View full analysis →added 9/16/2026 - US60314920 cases6/8 sections
I'll verify against live sources before summarizing. Verification notes I ran live web searches for 6031492 and for a Federal Circuit 2026 docket tied to that number. Results returned the patent itself (Google Patents, FreePatentsOnline…
View full analysis →added 9/28/2026 - US60329930 cases6/8 sections
I'll run searches against USPTO-style sources and litigation dockets for this specific number. Let me check litigation/assignment specifically. US 6,032,993 — Verified Bibliographic Summary Caveat on the litigation portion of your request…
View full analysis →added 9/24/2026 - US60340380 cases6/8 sections
I'll run searches on the patent number and any 2026 CAFC docket activity. Let me pull the full claim set and check for any 2026 CAFC docket activity. US 6,034,038 — Verification & Summary Bottom line: I verified the patent's bibliographic…
View full analysis →added 9/26/2026 - US60343710 cases6/8 sections
I'll search for this patent and for any related litigation. Now let me check for any litigation or CAFC activity, and verify the legal status. US Patent 6,034,371 — Search Summary Search scope note: I searched for the exact identifier…
View full analysis →added 9/24/2026 - US60497050 cases6/8 sections
I'll search for this specific patent number on USPTO and CAFC dockets. Let me do a couple of targeted checks for any litigation or appeal activity involving this specific patent. Search scope and confidence note I ran targeted searches…
View full analysis →added 9/24/2026 - US60555620 cases6/8 sections
I'll search for this patent number and check for any 2026 litigation activity. Let me check specifically for litigation or PTAB activity involving this patent. US Patent 6,055,562 — "Dynamic Mobile Agents" Search scope note: I searched for…
View full analysis →added 9/24/2026 - US60581060 cases6/8 sections
I'll search for this specific patent number across USPTO and CAFC sources. Now let me check for any CAFC 2026 docket activity and current legal status. Search Results — US Patent 6,058,106 Scope note: I searched for the exact number…
View full analysis →added 10/1/2026 - US60583150 cases6/8 sections
I'll run targeted searches for this patent number and its US docket presence. Search coverage and caveats I ran web searches aimed at the patent number, the patent title, and CAFC/litigation dockets. What I could and could not establish: -…
View full analysis →added 9/30/2026 - US60584450 cases6/8 sections
I'll verify this against live sources before summarizing. Let me check for litigation/appeal activity and verify assignee details. Let me pull the claim set to identify the independent claims precisely. Verification summary Sources…
View full analysis →added 9/28/2026