legal analysis: a person disposes of other people's property without the right to dispose, such as selling products, using trademarks of products, etc., and signs a contract with the obligee to transfer the property. In this case, the contract signed is a sales contract without the right to dispose. Legal Basis: Interpretation of the Supreme People's Court on Applicable Legal Issues in the Trial of Disputes over Sales Contracts Article 3 If one party claims that the contract is invalid on the grounds that the seller has no ownership or disposition right to the subject matter at the time of conclusion, the people's court will not support it. The people's court shall support the buyer's demand that the seller bear the liability for breach of contract or terminate the contract and claim damages because the seller fails to obtain the ownership or disposition right.