Contract expiration date

I have a contract that expires august 7, 2012 I am filing a summons and complaint next week and will get it time stamped. I know that means that I have done this to cover the statute of limitations for breech of contract which for me is a year away, but does that time stamped complaint also cover me on the contract date expiration? what I am worried about is serving the summons and complaint on the defendant and them running the clock out on the contract expiring before they get served. Help