I do not see rozszerzenie in the meaning of "expanding the scope of the patent" in the provided text. In most cases, one speaks of extending the term of patent protection:
B. Extending the patent:-
Get a term adjustment:-
If the patent filing procedure took a longer time than usual, then you are eligible to file for extending the term of your patent. It cannot be greater than 5 years.
Increase your patent term:-
If you were granted a patent for a period less than the time the legislation allows, then you are eligible for an extension of your patent term.
File an extension with the patent office:-
You then need to file for an extension with the patent office. Be sure to check the fee and the procedure required.
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