(2) In order to prevent others from using the patented invention for free, it is necessary to obtain temporary protection as soon as possible.
(3) before making a request for a real trial, get as long as possible to listen to the opinions of the market and the public in order to decide whether to make a request for a real trial.
(4) preventing others from obtaining patents for similar inventions by requesting that the contents of their applications for patents for inventions be published in advance.