2.2 Each party has the right to terminate the contract by registered letter if the other party breaches any provision, condition or provision of the treaty and fails to remedy such breach within [30 days] of receipt of written notice from the other party about such breach (provided that it can be remedied). The parties agree that the provisions of a confidentiality agreement concluded by the parties will remain in full use throughout the term of the agreement. 2.3 Any party has the right to terminate the contract by registered letter, without notice, in the event of bankruptcy, cessation of payment or transaction in the event of bankruptcy of the other party or for a reason that seriously infringes its rights. program(s), manuals and other documents to be written by the developer for the customer as part of the contract; The failure of either party to insist, in one or more cases, on the performance of any provision of the Agreement or to use any of its rights under this Agreement shall not be construed as a waiver of such provisions or a waiver of such rights, and the same shall remain in full force and effect. No individual or partial exercise of a right or appeal by either party shall preclude any other exercise or exercise thereof, or the exercise of any other right or remedy. All communications from one of the Parties under the Agreement shall be deemed to have been made correctly if they are sent in writing and either with a receipt by hand, by registered letter or by fax to the other Party, to its address indicated on the first page of this Agreement or to such other address as the other Party may designate. 3.3 The developer of the background rights and the foreground rights remain the property of the developer. In particular, the developer retains ownership and retains all concepts, techniques, specific skills or pre-programmed routines, technologies or codes developed, used or written for the purposes of the contract and/or forming part of the developer`s know-how, free from use. Upon final delivery and provided that the price is paid in full, the customer has the non-exclusive and non-transferable right to use the developer of the basic rights and foreground rights to the extent necessary for the operation of the services of the contract and their consultation by the intended users. . . .