If the client is the invalidation requester:
     When the client is accused of infringement, it is generally recommended to suspend the lawsuit and file a request for invalidation of the other party's patent.
     When the client finds that the competitor's patent cannot be bypassed, the client is advised to file an invalidation request for the patent.
     If the client is the requested party:
     Consider at the first time various prior disclosure documents that may exist before the filing date, including possible disclosure or disclosure by yourself, and prepare in advance.