The Patent Law of People's Republic of China (PRC) stipulates that patent agencies shall abide by laws and administrative regulations, accept the entrustment of clients and handle patent applications or other patent affairs; The contents of the client's invention and creation shall be kept confidential, except that the patent application has been published or announced.
It is recommended to collect evidence and go through legal procedures.
In addition, Article 9 of the Patent Law of People's Republic of China (PRC) stipulates that if two or more applicants apply for a patent for the same invention-creation, the patent right shall be granted to the first applicant. Therefore, you need to confirm whether you have applied for this patent first.