What is a corrective assignment primarily used for?

A corrective assignment is primarily utilized to amend ownership errors in trademark registrations. This process allows a current trademark owner to rectify any mistakes or inaccuracies in the recorded ownership of the trademark transferred or assigned. For instance, if there was an oversight during the initial assignment, such as a typographical error in the name of the assignee, a corrective assignment can clarify and properly document the correct ownership details with the United States Patent and Trademark Office (USPTO).

This procedure is essential for maintaining accurate records, which not only protects the legal rights of the trademark owner but also ensures that third parties, including potential licensees or purchasers, have clear access to the proper ownership information. Without such correction, there could be confusion regarding who truly owns the trademark rights, which might lead to disputes or complications in enforcing those rights.

Other options do not align with the primary function of a corrective assignment. Changing trademark colors, enhancing visibility, or registering additional trademarks are unrelated processes that do not relate to the amending of ownership records, underscoring why option B is the most accurate choice.