The Public Contracts (Miscellaneous Amendment) Regulations 2011 also modify the requirements for sending standstill notices. It will no longer be necessary to send a standstill notice to all tenderers who submitted an offer. There will be no requirement to send the notice to those economic operators whose tenders have been "definitively excluded". A tender has been "definitively excluded" where that exclusion has either been held to be lawful in proceedings or where the maximum period of three months has already passed since the bidder gained knowledge of its exclusion. Note that where this knowledge was gained prior to 01 October 2011, the process will fall under the old regime and a standstill notice should be sent to the bidder in question.