Specializing in patent, trademark, copyright, trade secret, and unfair competition law, including litigation and applications.

Formerly with specialty intellectual property law firms and a specialty practice section of a financial service law firm in Chicago, over a career of 35-plus years, John R. Crossan has counseled individuals, small and large businesses, and institutions of all sizes in protecting, enforcing, and defending their inventions, commercial goodwill, and creative expressions in agencies and courts throughout the nation and the world. He continues his practice of law in an independent, flexible, solo la...

Formerly with specialty intellectual property law firms and a specialty practice section of a financial service law firm in Chicago, over a career of 35-plus years, John R. Crossan has counseled individuals, small and large businesses, and institutions of all sizes in protecting, enforcing, and defending their inventions, commercial goodwill, and creative expressions in agencies and courts throughout the nation and the world. He continues his practice of law in an independent, flexible, solo law practice in fine offices on North Michigan Avenue, one of Chicago's premier business districts. An Engineering Science degree and a law degree facilitate his quick and thorough grasp of many areas of technology as well as the nuances of legal principles to give practical, cost-effective service.