Once the Owner provides a copy of the contract documents to the Contractor, does ownership of these documents transfer to the Contractor?

No. The Drawings, Specifications and models, including all additional instructions and copies thereof, furnished to the Contractor shall remain the property of the Owner. They are not to be used by the Contractor on any other work, and, with the exception of the signed Contract inclusive of Contract Documents, they shall be returned to the Owner upon completion of the Work before Final Payment to the Contractor is made.