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 AMENDMENTS 

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 ASSIGNMENT 

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.13 INTELLECTUAL PROPERTY RIGHTS 

## II.13.1 Ownership of the rights in the results 

The Contracting Authority acquires irrevocably worldwide ownership of the results  and of all intellectual property rights on the newly created materials produced specifically for the Contracting Authority 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. 

The intellectual property rights so acquired include any rights, such as copyright and other intellectual or industrial property rights, to any of the results  and in all technological solutions and information created or produced by the contractor or by its subcontractor in in performance of the contract . The contracting authority may exploit and use the acquired rights as stipulated in this contract. The Contracting Authority acquires all the rights as from the moment the contractor has created the results . 

The payment of the price includes any fees payable to the contractor about the acquisition of ownership of rights by the Contracting Authority including for all modes of exploitation and of use of the results . 

## II.13.2 Licensing rights on pre-existing materials 

Unless provided otherwise in the special conditions, the Contracting Authority does not acquire ownership of pre-existing rights  under this contract. 

The contractor licenses the pre-existing rights  on a royalty-free, non-exclusive and irrevocable basis to the Contracting Authority, which may use the pre-existing materials  for all the modes of exploitation set out in this contract or in specific contracts. Unless otherwise agreed, the licence is non-transferable and cannot be sub-licensed, except as provided hereafter: 

