CAB Forum Certificate Issuers, Certificate Consumers, and Interested Parties Working to Secure the Web
In order to protect the Intellectual Property of its members, the CA/Browser forum has adopted an IPR policy which has been signed by over 30 companies including the biggest names in the technology industry.
The complete list of current members is here: https://cabforum.org/forum.html.
The policy can be found on the IPR Policy page: IPR Policy