The former head of the International Monetary Fund, Dominique Strauss-Khan, is due to appear in a New York court for his arraignment, and has insisted he is innocent of the charges
Defence team member claims evidence undermines procecution.
William W Taylor, on behalf of Mr Straus-Kahn, has written that there is evidence to "gravely undermine the credibility of the complainant in this case".
Mr Strauss-Kahn faces charges of sexual assault and attempting to rape a hotel maid last month.
It will be his first appearance in court since he was released on bail set at $6m (£3.65m).