Markowitz Law Firm (Las Vegas): Competent, affordable legal services. Attorney Markowitz is licensed to practice in NYS, the USDC Colorado, 9th & 10th Circuit Courts of Appeal. Mission To provide competent, cost effective legal representation and advice in a diverse and complex developing market. Description The Law Office of Warren R. Markowitz Esq. is a boutique law firm offering White Collar, Corporate, Securities and Commercial Litigation services to small and medium sized corporations and professionals with an emphasis on the financial services industry.