620. Starting proceedings.

620.     Starting proceedings.

Proceedings are started when a person files in duplicate the relevant form1 and his statement of grounds2.

Any person may give notice of opposition to the amendment of a patent3 before the end of the period of two weeks beginning immediately after the date of the advertisement of proposed amendment in the Official Journal (Patents)4. In the case of other oppositions5, any person may give notice of opposition before the end of the period of four weeks beginning immediately after the date of the advertisement in the journal6.

A statement of grounds must:

  1.  

    (1)