Ader, an ex-Wall Street gaming analyst, battled with U.S slot-machine maker International Game Technology last year, winning a board seat for his firm. Ader has said the four new directors he proposes to be elected to Bwin.Party's board would provide significant expertise in online gaming, technology and U.S. banking systems. Bwin.Party has said it does not have sufficient information or time to review the suitability of each candidate, and believed it would not be in the interest of the company and investors for a shareholder with a stake of 5.25 percent to nominate so many directors onto the board. In March, the firm posted a 35 percent drop in full-year earnings to 108 million euros ($149.75 million) due to falling revenue, increased gaming taxes in Germany and start-up costs in New Jersey. ($1 = 0.7212 Euros) (Reporting by Neil Maidment)