Contract number:  Service contract conditions of December 2018 For the purpose of Article II.10, if part or all of the processing of personal data is  subcontracted to a third party, the contractor shall pass on the obligations referred to in  Articles I.9.2 and II.9.2 in writing to those parties, including subcontractors. At the request of  the contracting authority, the contractor shall provide a document providing evidence of this  commitment. II.10. SUBCONTRACTING  II.10.1  The contractor must not subcontract and have the contract performed by third parties  beyond the third parties already mentioned in its tender without prior written  authorisation from the contracting authority.  II.10.2  Even if the contracting authority authorises subcontracting, the contractor remains  bound by its contractual obligations and is solely responsible for the  performance of  this contract .  II.10.3  The contractor must ensure that the subcontract does not affect the rights of the  contracting authority under this contract, particularly those under Articles II.8, II.13  and II.24.  II.10.4  The contracting authority may request the contractor to replace a subcontractor found  to be in a situation provided for in points (d) and (e) of Article II.18.1. II.11.1  Any amendment to the contract must be made in writing before all contractual  obligations have been fulfilled. II.11.2  Any amendment must not make changes to the contract that might alter the initial  conditions of the procurement procedure or result in unequal treatment of tenderers.  II.12.1  The contractor must not assign the rights and obligations arising from the contract,  including claims for payments or factoring, without prior written authorisation from  the contracting authority. In such cases, the contractor must provide the contracting  authority with the identity of the intended assignee.  II.12.2   Any right or obligation assigned by the contractor without authorisation is not  enforceable against the contracting authority.  II.11. AMENDMENTS  II.12. ASSIGNMENT II.13.1. Ownership of the rights in the results  II.13. INTELLECTUAL PROPERTY RIGHTS  The Union acquires irrevocably worldwide ownership of the  results and of all intellectual  property rights on the newly created materials produced specifically for the Union under the  contract and incorporated in the  results , without prejudice however to the rules applying to  pre-existing rights  on  pre-existing materials , as per Article II.13.2. 24 