The patent has been destroyed.

1 does not necessarily infringe the patent right, because the reverse engineering patent law does not prohibit it, and even some people in China have developed and created more advanced technologies on this basis, and then applied for patent protection.

2. Since it is locked out of the country, it means that the technology may not have applied for patent protection in China, or adopted other protection methods such as trade secrets, but it does not rule out that it has applied for a patent in China, but it has not been made public for national interests, reverse cracking and other concerns.