- Overview
- Düsseldorf
- Dipl.-Ing. John-Hans Tsay
Patent attorney profile
Dipl.-Ing. John-Hans Tsay
Patent attorney (Patentanwalt), Düsseldorf
- Checked in the official register of patent attorneys (Patentanwaltsverzeichnis) of the Patentanwaltskammer on 28 October 2026
Details from the official register of patent attorneys (Patentanwaltsverzeichnis) of the Patentanwaltskammer
- Name
- Dipl.-Ing. John-Hans Tsay
- Professional title
- Patent attorney (Patentanwalt)
- Admitted since
- 20 February 2013
- Firm address
- Egbertstr. 32, 40489 Düsseldorf
- Phone
- (0172) 82 80 63 7
- jhtsay@yahoo.de
Source: Amtliches Patentanwaltsverzeichnis der Patentanwaltskammer (§ 29 PAO), as of 28 October 2026. The register is kept in German.
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