In addition to any common law rights that may be applicable to the term "Open Cloud" the Open Cloud Initiative (OCI) applied for registration (#77705857) of the term with the United States Patent and Trademark Office (USPTO) on 2 April 2009. This is a "Class A" application for a certification mark on the Principal Register.
Additionally, the Open Cloud Initiative (OCI) asserts common law trademark rights in its chain link "OC" logo.