We support businesses, law firms, and individuals by providing specialized legal services in intellectual property matters. Philadelphia Trademark Attorney, EsquireTrademarks.com, is operated by Attorney Charles Riddle and his staff of professionals. Attorney Riddle is a licensed patent attorney and has 20+ years of experience in the practice of intellectual property law. He manages various trademark, copyright, and patent portfolios for clients. He puts his experience to work when securing trademark rights in your business and protecting your brand.