Duke Yee|Intellectual Property Attorney|Patent Lawyer

Duke W. Yee

President and Senior Attorney

Duke W. Yee is the founder of Yee & Associates, P.C. Mr. Yee graduated from the University of Texas with a bachelor's degree in biology in 1986. He earned his law degree from the University of Texas in 1989. He obtained a bachelor's degree in electrical engineering, cum laude, in 1993 from the University of Texas at Dallas. Mr. Yee's experience includes extensive patent prosecution, as well as patent, copyright, trade secret, trade dress, and unfair competition litigation. In the area of patent prosecution, Mr. Yee helps corporate clients implement their large scale patent preparation and prosecution strategies. Additionally, he prepares and prosecutes patent applications for clients in a wide range of technology areas, including computer hardware, computer software, semiconductor, network, electronics, aerospace, and communications technologies.

Mr. Yee also counsels clients in various intellectual property matters, including licensing, infringement opinions, employee non-compete agreements, and confidentiality agreements. He also works with clients in developing and refining intellectual property strategies to meet client needs.

Mr. Yee is a past Chairman of the Computer Use and Technology Section of the Dallas Bar Association and a past President for the Dallas-Fort Worth Intellectual Property Law Association. Mr. Yee is a member of the American Intellectual Property Association. He has co-authored Keeping it Physical: Convergence on a Physicality Requirement for Patentability of Software-Related Inventions Under the European Patent Convention and United States Law, 15 J. INTELL. PROP. L. 239 (2008); Recent Developments in Patent Law, 2 TEX. INTELL. PROP. L. J. 59; and Selected Biotechnology Cases Interpreting §112 and §101, 2 TEX. INTELL. PROP. L. J. 281.

Mr. Yee is a registered patent attorney and is licensed to practice law in the State of Texas.

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Wayne P. Bailey

Senior Attorney

Wayne P. Bailey is a senior attorney at Yee & Associates, P.C. Mr. Bailey graduated from the University of Texas with a bachelor's degree in electrical engineering, with honors, in 1977. He earned his law degree from the University of Denver in 1990. Mr. Bailey began practicing law as an in-house intellectual property law attorney for IBM Corporation in 1990, continuing until 1993. From there, he worked as in-house IP counsel for NCR Corporation from 1993-1995, Symbios Logic Inc from 1995-1998, LSI Logic Corporation from 1998-1999, and Storage Technology Corporation from 1999-2002. Mr. Bailey is primarily involved in the preparation and prosecution of patent applications. Mr. Bailey has concentrated his work primarily in the computer, communication, and electronic related arts, including inventions in computer hardware and software, telecommunications, data storage systems, integrated circuits and semiconductor fabrication. In his past employment as in-house counsel, Mr. Bailey was responsible for all aspects of intellectual property law, including patents, copyrights, trademarks, trade secrets, invention mining and licensing. He also established a new in-house intellectual property law department and associated procedures for a start-up company.

Mr. Bailey is a registered patent attorney with the United States Patent and Trademark Office, and is licensed to practice law in the State of Colorado and Texas. He also is admitted to the United States Court of Appeals for the Federal Circuit. In addition, Mr. Bailey is a member of the American Intellectual Property Law Association.

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Stephen R. Loe

Senior Attorney

Stephen R. Loe is a senior attorney at Yee & Associates, P.C. Mr. Loe graduated from Abilene Christian University in 1990 with a Bachelor of Science in Physics.  He received his law degree from Baylor University School of Law in 1998.  Mr. Loe was a member of the Baylor Law Review and was the recipient of the Funderburk Evidence Award for the outstanding student in evidence. 

Mr. Loe practices intellectual property law focusing on preparation and prosecution of patent applications. He also provides clients with patentability, non-infringement, invalidity, and freedom to practice opinions. Mr. Loe prepares and prosecutes patent applications for clients in a wide range of technology areas including telecommunications, optics, software, electronics, semiconductors, geophysical exploration and development, aerospace, robotics, and document handling technologies.

Prior to attending law school, Mr. Loe was a physics graduate student and research assistant at the University of Pennsylvania. As a research assistant, Mr. Loe spent summers in Los Alamos, New Mexico, acquiring data using the linear accelerator at the Los Alamos Meson Physics Facility (LAMPF) located in the Los Alamos National Laboratories (LANL). He spent the remaining time each year on the campus of the University of Pennsylvania analyzing the data obtained at LAMPF.  Mr. Loe is co-author of several papers published in peer reviewed journals.

Mr. Loe is a past Treasurer of the Computer Use and Technology Section of the Dallas Bar Association.  Mr. Loe is a registered patent attorney and is licensed to practice law in the State of Texas.

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Peter J. Manghera

Senior Attorney

Peter J. Manghera joined Yee & Associates, P.C. in 2009, after thirteen years of practicing intellectual property law at prominent law firms in Wisconsin. Mr. Manghera graduated with distinction from the University of Wisconsin, College of Engineering, in 1988 with a bachelor's degree in electrical engineering. He graduated cum laude from the University Of Wisconsin School Of Law in 1994, where he was an associate editor of the Wisconsin Law Review and was awarded Order of the Coif. Between engineering and law school he served as a lieutenant in the United States Air Force at Hanscom AFB, Massachusetts, where he managed research and development acquisition projects. Mr. Manghera has focused his practice primarily on counseling clients in intellectual property matters. He has assisted clients that develop technology in areas such as semiconductor and micro-mechanical device fabrication, implantable and external medical devices for diagnosis and treatment, and software applications for user friendly information manipulation and display, statistical analysis, and business methods such as banking.

Mr. Manghera has extensive experience in the preparation of legal opinions and agreements related to intellectual property, including licensing agreements, and in assisting clients in determining intellectual property acquisition, enforcement, and defense strategies. Mr. Manghera is licensed to practice law in the State of Wisconsin. He is also registered to practice with the United States Patent and Trademark Office.

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Peter B. Manzo

Senior Attorney

Peter B. Manzo is a senior patent attorney at Yee & Associates, P.C. Mr. Manzo graduated from Thomas A. Edison State College with a bachelor's degree in natural sciences. He earned his law degree from Texas Wesleyan University School of Law and his doctor of chiropractic degree, summa cum laude, from Palmer College of Chiropractic. Mr. Manzo is a member of the Texas Bar Association, the National Order of Barristers, and the International Chiropractic Honor Society. His publications include: On The Media: Online Moot Court (National Public Radio broadcast, Dec. 20, 2002); Benjamin G. Davis et al, The First International Competition for Online Dispute Resolution: Is This Big, Different and New, 19 J. INT’L ARB. 379, 384 (2002); and LEON R. COELHO DC, DIVERSIFIED CHIROPRACTIC ADJUSTING TECHNIQUE, (Peter B. Manzo DC ed., Parker College of Chiropractic 2d ed. 1986).

Besides being a two-time gold medal recipient of the International Online Negotiation Competition, Mr. Manzo served as an adjunct online dispute resolution coach at Texas Wesleyan University School of Law for two terms. In addition, Mr. Manzo participated in the American Bar Association/Law School Division Client Counseling and Negotiation Competitions while in law school.

Dr. Manzo also served as Director of the Public Clinic and Chairman of the Technique Department at Parker College of Chiropractic. Moreover, the International Chiropractors Association’s Counsel on Chiropractic Sciences certifies Dr. Manzo in spinal trauma.

Mr. Manzo is a registered patent attorney with the United States Patent and Trademark Office and is licensed to practice law in the State of Texas. His primary practice area is patent law with a focus on patent application preparation and prosecution.

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Christopher P. O'Hagan

Senior Attorney

Christopher P. O’Hagan is a senior attorney at Yee & Associates, P.C. Mr. O’Hagan graduated from Washington & Lee University in 1994 with a Bachelor of Science in Physics.  He received his law degree from the George Mason University School of Law in 1998, graduating from the Corporate and Securities Law specialty track.

Mr. O’Hagan practices all aspects of intellectual property law with an emphasis on patent and trademark prosecution, invalidity and infringement opinions, and IP transactions. Working with clients ranging from start-ups to Fortune 100 companies, his experience covers a broad spectrum of technologies including computer hardware and software, electronics, mechanical devices, lasers, semiconductors, wireless communications, robotics, medical devices, and propulsion systems.

Mr. O’Hagan’s entertainment practice covers literary option and purchase agreements, motion picture development including producer and finder contracts, production and distribution agreements, and film finance.

Mr. O’Hagan also serves as general corporate counsel to technology and entertainment companies assisting them with entity formation, operating agreements, technology development and service agreements, general business contracts, and strategic IP planning including trade secret protection and IP portfolio management.

Mr. O’Hagan is a member of the State Bar of Texas and the Virginia State Bar and is registered to practice before the U.S. Patent and Trademark Office.

Rudy Siegesmund

Senior Attorney

Rudy Siegesmund received a B.S degree from the United States Military Academy in 1970. He earned an M.A. from the University of Massachusetts in 1978, and a J.D. from Southern Methodist University in 1989. Mr. Siegesmund founded Siegesmund & Associates in 1991 where he practiced until joining the Dallas Office of Gordon & Rees, LLP as a partner in January 2006. Mr. Siegesmund joined Yee & Associates, P.C. in August 2008 as a senior attorney. Mr. Siegesmund's experience includes extensive patent prosecution as well as patent litigation experience. In the area of patent prosecution, Mr. Siegesmund prepares patents in the fields of computer hardware, computer software, Internet applications, and telecommunications.

Mr. Siegesmund also has experience in writing and prosecuting patent applications in the food processing technology, petrochemical processing technology, oilfield drilling and production technology, railroad crossing technology, cryptography, medical devices, automotive devices, and business methods. In the area of litigation, Mr. Siegesmund has represented clients in patent infringement, trademark, trade dress, trade secret and anti-trust litigation.

Mr. Siegesmund is a registered patent attorney and is licensed to practice law in the State of Texas. He is admitted to all United States District Courts in Texas, the United States Court of Appeals for the Federal Circuit, and the United States Supreme Court.

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Brandon G. Williams

Senior Attorney

Brandon G. Williams is a senior attorney at the firm of Yee & Associates, P.C. Mr. Williams graduated from the University of Texas at Austin with a bachelor's degree in chemistry in 1997. Prior to entering law school, he worked as a formulation and quality assurance chemist for Ashland Chemical's Electronic and Specialty Chemicals division. Mr. Williams earned his law degree, cum laude, from Texas Wesleyan University School of Law in 2002. Before joining the firm, Mr. Williams practiced intellectual property with Clements and Walker in Charlotte, North Carolina. Mr. Williams concentrates his practice on the preparation and prosecution of patent applications, with an emphasis in the areas of computer software, computer hardware, electronics, and semiconductor technologies. Mr. Williams counsels clients in various intellectual property matters relating to patents, trademarks, trade secrets and copyrights.

Mr. Williams is a registered patent attorney and is licensed to practice law in the States of Texas (inactive status) and North Carolina. He is a member of the American Bar Association, the American Intellectual Property Law Association, and the Dallas Bar Association.

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Jeffrey G. Crook

Associate Attorney

Jeffrey G. Crook is an associate attorney at Yee & Associates, P.C.  Mr. Crook earned a Bachelor’s of Aerospace engineering in 1990 and a Master of Business Administration in 1992 from Auburn University.  He received his law degree from Texas Wesleyan University School of Law in 2005.

Mr. Crook practices intellectual property law focusing on the preparation and prosecution of utility and design patent applications in a wide range of technology areas.  His experience includes aeronautical parts and systems, medical equipment, exercise equipment, software, cabinet hardware, irrigation management, interactive projection systems, and underground topographic mapping.  Mr. Crook further assists his clients with preparation and prosecution of copyright and trademark applications as well as patentability and patent validity investigations, right-to-use studies, and infringement analysis opinions.  

Prior to law school, Mr. Crook worked as an Information Technology project management consultant with Pricewaterhouse Coopers and Cap Gemini Ernst & Young primarily in the telecommunications industry focusing on project office implementations, development of methods and procedures, and mentoring project managers on project management techniques and software.

Mr. Crook is a past member of the Texas Wesleyan University School of Law Alumni Board of Directors and currently is a member of the Board of Directors of a local animal rescue organization.  Mr. Crook is a registered patent attorney and is licensed to practice law in the state of Texas.


 

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Lawrence J. Kelly

Associate Attorney

Larry Kelly joined the firm as an associate in November 2011. He graduated from the United States Air Force Academy with a Bachelor of Science in Aeronautical Engineering in 1981. Mr. Kelly earned his law degree from SMU Dedman School of Law in 2009, where he was a research fellow for the Law Institute of the Americas. Mr. Kelly practices in all aspects of intellectual property with an emphasis in patent preparation and prosecution. Mr. Kelly's experience includes patent preparation and prosecution, patentability opinions, infringement opinions, patent searching, and client counseling related to patent issues.

Mr. Kelly has practiced in IP matters in fields of art including aircraft components, radio-frequency identification, polymer compositions, catalyst chemistry, pharmaceutical compositions, medical devices, optic and mechanical devices, oilfield tools, stored-value transactions, computer software, and business methods.

Prior to joining the Firm, Mr. Kelly served as a judicial clerk for the Honorable William R. Mullins, NTSB ALJ, as a patent clerk with Winstead PC in Dallas, and under contract supporting opinion letter projects at Conley Rose, P.C. in Plano, TX.

Previous to entering the legal profession, Mr. Kelly was an international airline captain, a flight training and safety instructor and manager for a major airline, and a Federal Aviation Administration Flight Engineer Examiner Designee. He holds Air Transport Pilot ratings for the Boeing B-727,B-737,B-757/767, the Fokker F-100, and the McDonnell Douglas MD-11. Mr. Kelly also served in the U.S. Air Force as a glider instructor, and as flight lead in the Lockheed T-33 Shooting Star and the McDonnell Douglas F-15 Eagle.

Mr. Kelly is is a registered patent attorney, licensed to practice law in the State of Texas, and a member of the Dallas Bar Association.

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Anthony McCain

Associate Attorney

Anthony McCain is an Associate for Yee & Associates.  He graduated from the University of Missouri in 2013 with a Bachelor of Science in Mechanical Engineering and a minor in mathematics. Prior to entering law school, he worked as a Design Engineer, where he designed natural gas infrastructure.  Mr. McCain earned his law degree from the University of Missouri School of Law in 2017 where he served as the Vice-President for the Association of Intellectual Property and Entrepreneurship Law.

Mr. McCain assists primarily in the prosecution of patent applications for aerospace technologies.  Mr. McCain is also well-versed in trademark clearance searches and registration.

Mr. McCain is licensed to practice in the States of Texas. He is also registered to practice before the United States Patent and Trademark Office.

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Kelly Sullivan

Associate Attorney

Kelly Sullivan joined the firm as an associate in August 2011. She graduated from Texas A&M University with a Bachelor of Science in Chemical Engineering in 2005. Prior to entering law school, she worked as a real-time defect analysis engineer for Micron Technology, and earned a Masters of Engineering from North Carolina State University. She earned her law degree, cum laude, from SMU Dedman School of Law in 2011. Ms. Sullivan has experience in prosecuting patent applications related to oilfield drilling and completion, food processing and packaging, and telecommunications.

Ms. Sullivan is registered to practice before the United States Patent and Trademark Office. She is also licensed to practice law in the State of Texas.

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Volel Emile

Of Counsel

Volel Emile is Of Counsel to the firm of Yee & Associates, P.C. He graduated from Pratt Institute with a Bachelor's degree in Electrical Engineering with Highest Honors and received his Master’s degree in Electrical and Computer Engineering from the University of California at Santa Barbara. Prior to entering law school, he was an engineer at AT&T Bell Laboratories in New Jersey. Mr. Emile earned his law degree from Southwestern University School of Law and has over 20 years of experience practicing all phases of intellectual property law. Mr. Emile has been an in-house corporate counsel as well as owner and founder of the Law Office of Volel Emile. His experience includes patent litigation support, patent prosecution, patent licensing and IP transactional work, infringement and validity opinions, domain name dispute resolution, trademark prosecution, trade secret and employee non-compete agreements, and copyright registration.

Mr. Emile currently focuses his practice on the preparation and prosecution of patent applications for clients in a wide range of technology areas, including computer hardware and software, electronics, semiconductor fabrication, power supplies, and communications technologies.

Mr. Emile is a registered patent attorney and is licensed to practice in the States of Texas and California as well as in the United States District Court for the Central District of California.

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Alexandria Serra

Of Counsel

Alexandria Serra is Of Counsel for Yee & Associates.  She graduated magna cum laude in 2008 from Kansas State University with a Bachelor of Science in Kinesiology.  Ms. Serra also graduated magna cum laude in 2013 from SMU Dedman School of Law.  Prior to attending law school, she spent six years in the health and wellness field, working with technology in the areas of human physiology, biomechanics, and cardiophysiology.

Ms. Serra also worked as a patent attorney prior to joining Yee & Associates, where she gained experience in patent litigation, patent licensing, and the preparation and prosecution of patent applications.  She previously prosecuted patent applications in the areas of aerospace, biomechanical devices, medical testing equipment, and surgical equipment.  

At Yee & Associates, Ms. Serra assists primarily in the preparation of patent applications for aerospace technologies.  Ms. Serra is also well-versed in trademark clearance searches and registration.

She is licensed to practice in the States of Texas and registered to practice before the United States Patent and Trademark Office.

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Thomas K. Ziegler

Of Counsel

Thomas K. Ziegler is Of Counsel to the firm of Yee & Associates, P.C. He graduated from the University of Missouri with a bachelor's degree in Electrical Engineering. Prior to entering law school, he was an engineer at a National Nuclear Security Administration (NNSA) facility involved in research and production of components for the Nation's nuclear weapons programs. Mr. Ziegler earned his law degree from the University of Missouri and has over 30 years of experience practicing all phases of intellectual property law. Prior to becoming Of Counsel to Yee & Associates, P.C., Mr. Ziegler held positions as in-house corporate counsel, and as a partner in a national law firm. His experience includes patent litigation, patent prosecution, patent licensing and IP transactional work, infringement and validity opinions, patent ownership disputes, trademark prosecution and litigation, trade secret and employee non-compete agreements and litigation, and copyright registration and litigation.

Mr. Ziegler currently focuses his practice on the preparation and prosecution of patent applications for clients in a wide range of technology areas, including computer hardware and software, electronics, complex mechanical assemblies, aerospace, composite materials and communications technologies.

Mr. Ziegler is a registered patent attorney and is licensed to practice in the State of Michigan. He is a member of the Michigan Bar and the American Intellectual Property Association.