 In February 2012, when the CC0 license was submitted to the Open Source Initiative for approval, controversy arose over a clause which excluded any relevant patents held by the copyright holder from the scope of the license.This clause was added with scientific data in mind rather than software, but some members of the OSI believed it could weaken users' defenses against software patents.As a result, Creative Commons withdrew their submission, and the license is not currently approved by the OSI.