USPTO Patent Grant Search — Bulk by Keyword, Assignee & CPC

Trademark Search — USPTO Serial + IP Australia Name Search

nexgendata/uspto-trademark-search

Look up US trademarks by serial/registration number from the official USPTO TSDR source; search by brand name across the IP Australia register (USPTO/TMView merged when reachable). JSON: mark, owner, status, serial/registration, dates, class, goods/services. No API key. Pay per record.

USPTO Patent Search — US Prior Art via Google Patents Index

nexgendata/uspto-patent-search

Search US patents (USPTO grants and published applications) for prior art by keyword, assignee or inventor, via the Google Patents index. Not an official USPTO API. Clean JSON with citations, CPC classes and claims.

China (CN) Patent Search — via Google Patents Index

nexgendata/cnipa-china-patent-search

Search Chinese (CN) patent publications — CNIPA-filed records as indexed by Google Patents — with abstracts, claims and citations. Not an official CNIPA API. Clean JSON for analysts, quants and AI agents.

USPTO API - Patent & Trademark Data

alizarin_refrigerator-owner/uspto-api---patent-trademark-data

Access USPTO patent & trademark data. Search 11M+ US patents by keyword, inventor, assignee or classification. Get patent details, claims, citations legal status. Track trademark registrations and applications. Search Patents Search by Inventor Get Patent Claims Get Citations Search Trademarks

USPTO Trademark Search — Lookup, Availability & Data

sian.agency/uspto-trademark-scraper

Search and extract USPTO trademark data — keyword search, brand-name availability checks, owner and full-text search, serial-number lookups, class suggestions, and expiring-mark discovery. Seven operations, one clean dataset per run. No API key, no setup.

ETF Holdings Tracker — Daily Constituents & Weights API

nexgendata/etf-holdings-tracker

Track ETF constituents and weights from SEC EDGAR — parsed, source-linked JSON for analysts, funds and AI agents. No API key. Pay per record.

China Trends Tracker · 中国趋势汇总(微博/百度/头条/抖音)

nexgendata/china-trends-tracker

Aggregate real-time trending topics from China's top platforms: Weibo Hot Search, Baidu Hot, Toutiao Hot Board and Douyin Hot Search. Returns topic, rank, score and source URL in one call. No API key. Pay per record.

Search and extract United States patent data from the official PatentsView API. Find patents by keyword, inventor name, assignee organization, date range, CPC classification, and patent type.

Google Patents Scraper — Search, Detail, Citations

scrape.badger/google-patents-scraper

Scrape Google Patents at scale: search the full patent corpus by keyword, inventor, assignee, country, language, status, patent type, and filing date, then pull rich document details (abstract, every claim, full description, CPC classifications, backward/forward citations.

USPTO Patent Search

dash_authority/uspto-patent-search

Search US patents via the PatentsView API. Find patents by keyword, assignee organization, inventor, date range, and CPC classification. Ideal for patent attorneys, R&D teams, competitive intelligence, and VC due diligence.