How to write a letter of guarantee that patent acquisition by others does not constitute infringement?

guarantee

XXX developed by XXX, after search, XXX in this application, etc. , does not constitute infringement of other people's patents. If there is any falsehood, the applicant is willing to bear the corresponding legal responsibilities and bear all the consequences arising therefrom.

Name of applicant (institution): XXX

Date: x year x month x day

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