Our Experience Becomes Your Advantage

The attorneys and professionals at Andrus provide highly specialized and experienced legal counsel in a wide range of technical areas. All of our attorneys are educated engineers or scientists and are licensed to practice before the U.S. Patent and Trademark Office, enabling them to recognize both technical and legal issues. In addition, many of our attorneys have experience as in-house counsel or engineers, lending insight into the business and commercial needs of our clients.


Ryann H. Beck

Ryann focuses her practice on domestic and international patent and trademark prosecution and enforcement, with technical expertise in medical devices, patient monitoring and treatment devices, computer software, electrical and electronic circuits and systems, and mechanical devices.

Emily M. Chilson

Emily focuses her practice on domestic and international patent and trademark prosecution and enforcement, with technical expertise in wearable apparel and consumer packaged goods, engines and control systems, transportation equipment, paper industry machinery, pumps and circuits, metal cutting machines, and other mechanical devices.

Peter T. Holsen

Peter focuses on domestic and international patent and trademark prosecution and enforcement, with a focus on developing global strategies to maximize investments in IP. Peter has technical expertise in a variety of mechanical and electro-mechanical technologies, including engines and control systems, oil and gas technologies, and food processing equipment.

Benjamin R. Imhoff

Ben focuses on domestic and international patent and trademark prosecution and enforcement, and develops IP strategies that complement his clients' business goals. Ben has significant experience in the medical technology field, including mechanical therapy devices, electrical patient monitoring systems and software-implemented imaging.

Melissa L. Kleine

Melissa focuses her practice on domestic and international patent and trademark prosecution and enforcement. She counsels clients regarding patentability and infringement issues across a wide variety of mechanical and electromechanical technologies.

Thomas R. Knight

Tom focuses on domestic and international patent and trademark prosecution and enforcement. Prior to attending law school, Tom earned a masters degree in business administration and a bachelor of science degree in biomedical engineering. Tom uses his legal, business and technical backgrounds to counsel clients in all areas of IP.

Joseph D. Kuborn

Joe focuses on domestic and international patent and trademark prosecution and strategic analysis relating to product development. Joe has expertise with a variety of technologies, including medical devices, patient monitoring devices, RF technology, wireless devices, computer software and hardware, car wash controls and furniture designs.

Christopher R. Liro

Chris focuses his practice on intellectual property litigation in federal district and appellate courts, administrative proceedings before the PTAB and ITC, and counseling clients in transactional matters, including licenses, joint development agreements and dispute resolution. Chris has served clients in a variety of technology areas.

Aaron T. Olejniczak

Aaron focuses on guiding clients through IP disputes, including patent and trademark litigation at the district and appellate court levels, post-grant challenges such as inter partes review proceedings before the PTAB, and trademark opposition and cancellation proceedings before the TTAB. Aaron has served clients in a variety of technology areas.

Kevin J. Spexarth

Kevin focuses his practice on domestic and international patent and trademark prosecution and enforcement. His experience includes patent and trademark prosecution, IP management and planning, and corporate IP development. 

Edward R. Williams

Ed focuses his practice on domestic and international patent and trademark prosecution and enforcement, with a focus on developing winning IP strategies for his clients. In addition to strategic planning, his experience includes IP litigation, cease and desist practice, licensing, development agreements, and corporate acquisition matters.

Daniel P. Ochoa, Patent Agent

Daniel is a registered patent agent at Andrus Intellectual Property Law. Daniel focuses his practice on assisting clients with preparing and prosecuting domestic and international patent applications, as well as conducting patentability searches and assessments.

George H. Solveson

George is a retired partner of Andrus Intellectual Property Law who focused on patent and trademark enforcement and prosecution.

Daniel D. Fetterly

Dan is a retired partner of Andrus Intellectual Property Law who focused on patent and trademark prosecution.

Michael E. Taken

(1947-2017)

Mike focused his practice on domestic and international patent and trademark prosecution, with extensive experience developing and managing global patent portfolios for large companies. Mike served clients in a variety of technology areas.