A German court has cleared Italy's Paolo Bettini to defend his title in Sunday's elite men's title at the cycling world championships in Stuttgart.

The reigning champion's participation was in doubt after German cyclist Patrik Sinkewitz claimed Bettini had supplied him with doping products.

The organizers insisted that Bettini sign the full UCI anti-doping agreement which makes it compulsory for every rider to provide a blood sample before Sunday's race.

Bettini says demanding a sample is a breach of his human rights and has also refused to sign any agreement because of a clause which demands the repayment of a year's salary after a positive drugs test. Bettini signed a partial agreement in July which excluded the providing of a blood sample.

UCI president Pat McQuaid concured, saying the Italian has the right to reject the agreement.

"The signing of the agreement is only a moral obligation, that is something the Stuttgart organizers must accept," said McQuaid.

Susanne Eisenmann, the president of the organizing committee in Stuttgart, told German television channel ZDF on Thursday morning she wants every rider to sign the agreement to ensure the event is as drugs-free as possible.

Later on Thursday, Eisenmann and the organising committee asked Stuttgart's regional court to issue an injunction, preventing him from starting, but the court on Friday rejected that demand.

Eisenmann and Stuttgart mayor Wofgang Schuster issued a joint statement saying they accept the decision and will drop the matter.

“After the ruling, we are still sticking to our demand that the UCI must abide by the Agreement on Anti-doping Measures signed on July 26, 2007,” Schuster said. “Ultimately the question as to whether Paolo Bettini starts or not is not a legal one but it’s about the credibility of cycling. The UCI has to realize themselves what they are signaling when they guarantee Bettini’s start [even though] he refuses to sign the pledge. It’s definitely not a sign of a new beginning.”