PatentsView
API is intended to explore and visualize trends/patterns across the US innovation landscape
Taiwan patent search system api.
TIPO API is a free Patent API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.

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API is intended to explore and visualize trends/patterns across the US innovation landscape
Yes. The TIPO API is listed in the Patent category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The TIPO API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the TIPO API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The TIPO API is served over HTTPS, so it's safe to use in production.