In Jan OCR extended their bid on the friday it expired but it previous months they have announced the extension the business day after the offer expired - october/november is an example - it expired fri 28th and they extended it on mon nov 1. Look for them to extend on monday.
That said, if they don't then NCRX will fall somewhat on monday. However, the fact OCR have been willing to pay $30 for the shares means it is unlikely it will fall to pre-offer levels. Also, NCRX have, in the last 2 qtrs, turned their business around and the stock would be higher than last june's levels anyway.