John Luken focuses his practice primarily on patent infringement litigation as well as complex commercial and other intellectual property litigation. He has handled patent infringement cases involving a variety of services and products, including commercial forms and related software, software-related business method patents in the printing and financial services industries, metal beverage cans and closures, surface coal mining blasting methods, service station petroleum equipment, and retail security products.

While his practice now focuses largely on patent infringement matters, John has handled a wide variety of other types of complex litigation matters, ranging from securities, commodities, RICO and fraud claims arising out of complicated derivatives transactions to shareholder derivative litigation, environmental litigation, business and government contracts cases, and ERISA class action cases. John's approach is to focus first on client needs and objectives and to approach matters flexibly and creatively, rather than in a one-size-fits-all manner, so that complex matters can be resolved favorably, expeditiously, and cost-effectively. John also chairs the firm's e-Discovery Group and is an active member of the influential Sedona Conference Working Group on Electronic Document Retention and Production (WG-1), participating in several Sedona drafting teams, including the Case for Cooperation (urging more rational, expeditious, and less expensive discovery processes).