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USPTO TTAB Docket Diff API — Opposition & Cancellation Tracker

Purpose-built diff stream for USPTO TTAB — per-proceeding status / filings / parties / marks / deadlines / decisions as JSONL. TTABVUE-API-native vocab vs general-purpose scrapers like Browse AI; per-record metered vs CompuMark $20-200k/yr for trademark counsel + IP litigators. Public runs.

Pricing

from $3.40 / 1,000 result storeds

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Developer

ChangeWire

Actor stats

Bookmarked

Total users

Monthly active users

17 days ago

Last modified

Categories

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Proceeding numbers

proceeding_numbers

Optional

Specific TTAB proceeding numbers to track (e.g. 91234567 oppositions, 92123456 cancellations, 88123456 ex parte). If empty, falls through to filer / mark / date filters; if all are empty, the actor processes the most recent daily changes feed.

Type:array

Default:

[]

Proceeding types

proceeding_types

Optional

Filter by TTAB proceeding category. Valid values: OPP (opposition), CAN (cancellation), EX (ex parte appeal), CON (concurrent use), INT (interference). Case-insensitive.

Type:array

Default:

[
  "OPP",
  "CAN"
]

Filer watchlist (party names, case-insensitive substring)

filers_watch

Optional

Match party names whose plaintiff_name or defendant_name CONTAINS any string in this list (case-insensitive). Useful for tracking specific brands or law firms across all proceedings.

Type:array

Default:

[]

Mark watchlist (case-insensitive substring)

marks_watch

Optional

Match proceedings whose challenged_mark_text CONTAINS any string in this list (case-insensitive).

Type:array

Default:

[]

Lookback days (daily-changes feed)

lookback_days

Optional

When proceeding_numbers is empty, the actor pulls TTABVUE daily-changes feeds for this many trailing days and unions the resulting proceeding set. Larger windows take longer.

Type:integer

Minimum:1

Maximum:90

Default:7

Change types to emit

change_types

Optional

Subset of: status_change, filings_added, parties_change, deadline_change, mark_change, decision_landed. Empty = emit all.

Type:array

Default:

[
  "status_change",
  "filings_added",
  "parties_change",
  "deadline_change",
  "mark_change",
  "decision_landed"
]

Snapshot key

snapshot_key

Optional

Key-value store key holding the previous snapshot. Default: 'ttab-snapshot-latest'.

Type:string

Default:

TTABVUE base URL override

ttabvue_base_url

Optional

Override the TTABVUE base. Default https://ttabvue.uspto.gov. Useful for offline test mirrors.

Type:string

Default:

Polite rate limit (requests per second)

rate_limit_rps

Optional

USPTO does not publish a public RPS limit but blocks at >10 rps. Default 2 is polite-default.

Type:integer

Minimum:1

Maximum:5

Default:2

EPA ECHO Compliance Diff API — CAA, CWA, RCRA, SDWA Enforcement

changewire/epa-echo-compliance

Purpose-built diff stream for EPA ECHO — facility-flip / violation-class / enforcement-case / CAA/CWA/RCRA/SDWA permit changes as JSONL. ECHO-API-native vocab vs general-purpose scrapers like Browse AI; per-record metered vs Cority $30-200k/yr seat tax for ESG, EJ, journalism, NGOs. Public runs.

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changewire/fda-orange-book-extraction

Purpose-built FDA Orange Book diff stream — NDA/ANDA/BLA patent listings, exclusivity grants, LoE + TE-code shifts as JSONL. FDA-vocabulary-aware vs general-purpose scrapers like Browse AI; per-record metered vs Cortellis $35-50k/yr seat tax for pharma BI + IP + generics. Public runs.

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Grants.gov Opportunity Alert — Daily Federal Grant Diff

changewire/grantsgov-opportunity-alert

Purpose-built federal NOFO diff stream — Grants.gov REST API with NIH/NSF/DOE/USDA program-officer + eligibility + close-date diff records as JSONL. Federal-only focus vs Instrumentls nonprofit-foundation breadth; per-record metered ($0.0034) vs Browse AIs $19-249/mo subscription tax. Public runs.

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ClinicalTrials.gov Protocol Change Monitor

changewire/clinicaltrials-protocol-diff

Purpose-built diff stream for ClinicalTrials.gov v2 — per-NCT status / enrollment / endpoint / sponsor / eligibility / locations changes as JSONL. Replaces Evaluate Pharma + Citeline + general-purpose scrapers like Browse AI for pharma BI, drug-discovery AI agents, biotech reporters. Public runs.

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Api Diff API

vivid_astronaut/api-diff

Fabio Suizu

Uspto Trademark Scraper

fortuitous_pirate/uspto-trademark-scraper

USPTO Trademark Search & Monitor. Structured data export for lead generation, enrichment, and competitive research.

Fortuitous Pirate

NOAA Storm Events Diff API — Damage Revisions for Cat Modeling

changewire/noaa-storm-events-diff

Purpose-built NOAA Storm Events post-event-audit diff — F-scale upgrades, damage revisions, casualty deltas as JSONL. Storm-vocabulary-aware vs Browse AI; per-record metered vs AccuWeather Enterprise / StormGeo / CoreLogic $25-50k/yr seat tax for actuarial + FEMA + litigation cohorts. Public runs.

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🔍 ™️ Trademark Search — USPTO Database Lookup

nexgendata/trademark-search

Search USPTO trademark database for registered & pending marks. Get filing status, owner data, classifications & history. Essential for brand clearance & IP due diligence. Pay per search.