If you only entrust an agency to submit a patent application, it does not include the service of infringement analysis. Usually, the service fee for infringement analysis is as low as tens of thousands of yuan.
The workload of infringement analysis is much greater than that of new applications, so it is necessary to conduct infringement search on existing technologies and analyze the search results in depth.
Many technologies are improved on the basis of existing technologies, and these improvements are likely to have the conditions for applying for patents. After the patent is granted, your behavior of implementing this patented technology is likely to be an infringement.
For new patent applications, agents usually conduct novelty search. It usually happens that the patent applied for is not novel or obviously not creative, and the applicant abandons the application, but will not give any novelty retrieval service fee to the agency.
It is best to sign a contract with an agency, stipulate that the service items include novelty retrieval, and apply for agency fees including novelty retrieval service fees. Once the agency finds that the application is not novel or obviously not creative, it will suspend the patent application and refund the fees other than the retrieval service fee, so that the agency can search for you more attentively.