In a lawsuit of infringing patent, defendant often carries on a plea by concluding a contract with a third party.

在专利侵权诉讼中，被告常以与第三者所签的合同来进行抗辩。

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The contracted interest refers to that existing between the contracting parties in the process of concluding a contract.

缔约利益是指缔约磋商当事人在合同缔结过程中存在着的一种特殊利益，其具有实存性、绝对性的特点。

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A business secret the parties learn in concluding a contract shall not be disclosed or unfairly used, no matter the contract is established or not.

当事人在订立合同过程中知悉商业秘密，无论合同是否成立，不得泄露或者不正当地使用。

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