The following companies already stated their commitment to follow the Code of PLM Openness in written form:
IT CUSTOMERS
IT VENDORS
IT SERVICE PROVIDER
The self-declaration of the IT vendors on how they meet the CPO criteria with their products (CPO statement) can be found here as a link for the respective vendor. Vendors must publish their CPO statements, service providers can. You will also find statements from the partners here explaining why they support the CPO initiative.