German patent application system?

1. German inventions need to pay maintenance fee/annual fee in the third year from the date of filing, regardless of whether the patent is authorized or not.

2. The German utility model shall pay the extension fee in the third, sixth and eighth years from the date of application, so as to maintain the effectiveness of the utility model.

3. The term of protection of design patents is different. The protection period of German design patents is 5 years, and then it will be renewed every 5 years until it reaches 25 years.