Trifluoperazine paten?

Do you want patent information for trifluoperazine? Here’s a quick summary and how to check it precisely.

What to know
- Trifluoperazine is an old phenothiazine antipsychotic. It was developed in the mid-20th century (originally marketed under various brands such as Stelazine in some markets).
- The core patents on trifluoperazine (the chemical itself and earliest synthesis/formulations) are very old and are expected to have expired in most jurisdictions. Generics for trifluoperazine are common.
- There may be newer patents in specific areas (e.g., particular salt forms, specific formulations, combination products, or new medical uses). Those would be jurisdiction- and date-specific.

How to check current patent status (recommended steps)
- Google Patents (google.com/patents): search “trifluoperazine patent” and filter by country. Look for earliest filing dates and assignees (likely Rhône-Poulenc/Sanofi or related entities historically).
- Espacenet (worldwide.espacenet.com): good for European patents and international families; use “trifluoperazine” as a keyword and also search by chemical name or synonyms.
- USPTO Patent Full-Text and Image Database (uspto.gov): useful if you care about U.S. status, with assignee search to trace original holders.
- WIPO PATENTSCOPE (patentscope.wipo.int): for PCT and international family patents.
- If you want, tell me your country of interest and whether you want the core chemical patent only or any patents on formulations/uses. I can guide you to the exact records and even summarize them.

If you’d like, I can search now for you in a couple of key jurisdictions and summarize any active/in-force patents related to trifluoperazine (or confirm that none appear to be active).