About Us Ronald L. Kossack is an Arizona attorney whose practice is exclusively devoted to family law. Mr. Kossack has been handling cases including divorce, paternity, child custody (decision making), child support, spousal maintenance (alimony), prenuptial agreements and modifications since 1993. He has represented over 2,000 clients and has served as the lead attorney on more than 850 trials and hearings in Tempe, Arizona, and surrounding areas. His goal is to resolve cases through aggressive negotiation, avoiding costly litigation if possible. When that is not an option, he is ready for trial. Mr. Kossack is a master litigator who has a strong presence in the courtroom and has earned the respect of judges and other attorneys. He will provide aggressive representation while fighting to protect your rights. Mr. Kossack knows the law and how best to present and position your case for the best possible results under the circumstances. He will handle your case personally from start to finish and discuss every possible option with you throughout your case.