Imitate the patent certificate of the original unit

It won't be investigated, because in the labor contract with your former company, the other party didn't clearly stipulate that you must bear the responsibility of confidentiality after leaving your job.

If the former company files a lawsuit, it will be rejected for lack of objective factual evidence. You can rest assured.

If you pursue it, you will also pursue your personal responsibility. But once the other party sues, it is the responsibility to prove your breach of contract. If the other party cannot provide evidence, the natural court will not support it.