The case relating to the infringement of Patents as mentioned in your question can be both the Criminal Case and Civil Case.
With regard to the Criminal Case, it probably would be very difficult for the police officer to understand the argument in the invention and innovation process of any product. Thus, it is more appropriate for the injured party to appoint a lawyer and prosecute the infringer by himself in a private capacity and potentially claim damages in the same case.
The police officer will not handle the Civil Case concerning the claim of damages.
Generally speaking, the police officer would only handle the Civil Case that connects to the Criminal Case.
In this particular instance, the police officer would not accept to handle the Criminal Case as I mentioned before. Consequently, the police officer would not accept to handle the Civil Case as well.