INTACS is a registered word mark. The word mark "INTACS" was registered as an International Trademark with the EUIPO (European Union Intellectual Property Office) under the registration number 003520772 on 2021-02-11. INTACS is a registered word mark of the International Assessor Certification Scheme e.V. in the EU, the U.S., Japan, Korea, India, and China.
In principle, the trade mark should be used in the registered form as word mark "INTACS". The use of "INTACS®" is desired.