S. 5573 aims to change title 35 of the United States Code to create a "safe harbor" that protects certain actions from being considered patent infringement. Specifically, it protects companies that apply to sell generic or biosimilar versions of drugs or biological products...
Simple Explanation
The bill wants to make it okay for companies to sell cheaper versions of medicines without getting in trouble for using someone else's idea, as long as they don't copy certain special uses from the original. It also wants this rule to work for things done before, now, or in the future.