The generic drugmakers aim to prove the patent is flawed or otherwise invalid, so they can launch a generic version well before the patent ends.

NPR: Court: Can Drug Companies Pay To Delay Generics?

If any such provision is determined to be invalid or otherwise unenforceable, these rules shall be construed in accordance with their terms as if the invalid or unenforceable provision was not contained therein.

CNN: Inside the Envelope

In the event that any such provision is determined to be invalid or otherwise unenforceable, these rules shall be construed in accordance with their terms as if the invalid or unenforceable provision was not contained therein.

WSJ: Blindfold Brackets 2013: Official Rules