It depends on the "drag net" clause or "registered persons" provisions contained in the listing agreement. The Listing broker is usually required to register the parties 5 or 10 days after the lsiting expires and the time limit to consumate the sale may range from 90 days up to 1 year. The registration only applies ti entities actually procured by the broker.
i hope this helps. JT at Daum Commercial
Jan 7, 2013