Surinder (Sach) Sachar

Surinder (Sach) Sachar is a partner and electrical technology patent attorney.

A former Patent Examiner with the United States Patent and Trademark Office (USPTO), Mr. Sachar handles patents from application through prosecution and has extensive experience in all aspects of patent prosecution, including bringing cases before the Patent Trial and Appeal Board (PTAB).

An electrical engineer by training, he has worked with high-technology inventions, including high-density optical recording devices and systems, semiconductors, displays, medical instruments, ultrasound devices, mobile communications systems, computers, TVs, consumer electronics, image forming equipment, and telecommunications devices.

For the past 33 years, Mr. Sachar has represented several leading global electronics companies headquartered in Japan helping to protect the intellectual property portfolios of their diverse technologies.

Mr. Sachar also offers opinions and counsels clients on the full range of patent issues, including the interplay of patents, methods to garner strategic and broad patent portfolio protection, and how to avoid infringement of competitor patents. With experience at the USPTO, where he specialized in the fields of magnetic and optical recording systems, Mr. Sachar understands its inner workings and possesses the depth of knowledge, experience, and success to craft the broadest enforceable patents to serve his clients’ business needs.

Michael R. Casey, Ph.D.

Michael R. Casey, Ph.D., is a partner with more than 25 years of experience in patent law including patent litigation, patent prosecution, post grant proceedings, and patent interferences. His practice focuses on all aspects of computer hardware and software, as well as circuit design and telecommunications.

Dr. Casey is experienced representing and counseling electronics and computer-technology clients — both foreign and domestic — on intellectual property law and related issues, including procurement, valuation, licensing and enforcement of intellectual property. His representations include patent litigations before a number of Federal District Courts; appellate arguments before the Federal Circuit; International Arbitrations; post-grant proceedings (including IPRs and CBMs); preparation of patent opinions relating to invalidity, non-infringement, and product clearances; patent preparation and prosecution (U.S. and foreign); and patent interferences.

Dr. Casey earned advanced degrees based on his research in Electrical and/or Computer Engineering, and is a co-author on numerous papers in the areas of distributed, heterogeneous, and mobile computing systems and operating system designs.

Dr. Casey’s technical background covers a variety computer-related technologies and medical device equipment. In the computer field, Dr. Casey’s experience includes circuit design (including parallel processing architectures and field programmable gate arrays); computational intelligence systems (including artificial intelligence (AI), neural networks, bioinformatics, and fuzzy logic), encryption software and applications (including blockchain, digital rights management (DRM) and PKI), computer networking software, hardware and algorithms, electronic commerce, computer graphics and animation, communications algorithms and hardware, and programming languages and methodologies. In the medical device field, Dr. Casey has represented clients in the fields of IV pumps and catheters for guidewires.

Patrick G. Wamsley

Patrick Wamsley is a registered patent attorney and practices all aspects of patent prosecution. Prior to becoming a patent attorney, Patrick worked at the United States Patent and Trademark Office (USPTO) as a patent examiner. Patrick specialized in analog to digital converters, data compression, decoders, encoders, filters, serial to parallel converters, and sigma-delta modulators.

Ryan Thompson

Ryan Thompson is an electrical engineer with a Bachelor of Science in Electrical Engineering from The University of Texas at Dallas, where his studies focused on computer architecture and integrated circuit technologies. During his time at university Ryan also worked for an engineering company gaining experience in designing and testing electro-mechanical relays. Ryan’s experience includes working with teams to design and test relays, IoT systems, and other hardware systems.

Ryan is currently studying at The George Washington University Law School, where he is a J.D. candidate.

Grant Pincock

Grant Pincock is a technical advisor who has experience working with the Internet of Things and software technologies. He received a Bachelor of Science from the University of Utah, where he majored in Accounting and thereafter obtained an Associate of Science from Salt Lake Community College where he majored in Computer Sciences and Information Systems. Grant is a current law student at the George Washington University Law School and serves as a staff editor for the American Intellectual Property Law Association Quarterly Journal.

Erin Dierkes

Erin Dierkes is a Biomedical Engineer with a Bachelor of Science degree from Drexel University with a concentration in Biomaterials and Tissue Engineering. She has professional experience with biomedical devices and the healthcare industry.

Erin is currently a law student at The Catholic University Columbus School of Law working towards her J.D. and a certification in Intellectual Property Law. She made Dean’s List her first year of law school and is preparing to take the patent bar exam to become a registered patent agent.

Shaishav Shah

Shaishav Shah is an Electrical Engineer who graduated from Wright State University with a focus on Electromagnetics & RFID Systems.  Shaishav has substantial experience in searching for relevant prior art, preparing office actions as an examiner, working with attorneys to prepare office action responses (Amendments), preparing information disclosure statements (IDS) & filing patent applications along with all the necessary formality documents.

Shaishav is a former Patent Examiner at the United States Patent and Trademark Office (USPTO). During his tenure at the USPTO, Shaishav examined patent applications related to various technologies such as: electrical circuits and electronic digital logic circuits, wireless and digital communication, networking, cryptography, computer hardware, RFID, semiconductors, multiplexing and data security.  He has also previously worked as a Technical Specialist at RCSC Intellectual Property Law and an IP Specialist at Crowell & Moring LLP & at Neifeld IP Law.

While working as a Technical Specialist, Shaishav has examined and assisted with the prosecution of patent applications related to variety of  technologies such as: computer networking, data security, multiplexing, semiconductors, wireless communication and image analysis. In previous roles, Shaishav has provided technical expertise during invention evaluation and making determinations based on federal laws, codes and judicial precedents while preparing official communication documents.

H. James Voeller

Jim Voeller is a registered patent attorney with over 15 years of Intellectual Property law and patent procurement experience. His technical expertise is in chemistry, biotechnology, pharmaceuticals, and medical devices.

Jim’s experience includes drafting and prosecuting hundreds of US and PCT patent applications in a broad range of subject areas, conducting appeals and post-grant proceedings before the PTAB, preparing validity and infringement opinion reports, counseling clients, and providing litigation support in patent infringement matters. He has also managed and instructed non-U.S. based law firms and associates in matters related to PCT patent prosecution.

Prior to becoming a patent attorney, Jim was a Research Associate at the National Institutes of Health and at the Georgetown University Lombardi Cancer Center where he conducted research into the cellular, molecular, and genetic mechanisms of human prostate cancer. His research has been published in several peer-reviewed journals and presented at international meetings.

Jim received a Bachelor of Science degree in Biology from James Madison University, a Master of Science degree in Molecular Biology from the University of Maryland, and a Juris Doctor degree from George Mason University – Antonin Scalia Law School. He is registered to practice before the U.S. Patent and Trademark Office, and admitted to practice in the Commonwealth of Virginia and in the District of Columbia.

Lin Chen

Lin Chen is Associate with Maier and Maier. Prior to joining the firm, she had been a Chinese Patent Examiner for ten years in the Patent Examination Cooperation (Beijing) Center of the Patent Office, National Intellectual Property Administration, PRC (CNIPA formerly SIPO). During her patent examining experience, she conducted over 600 patents’ prior art search and sent out more than 1800 patent office actions for the patent applications in the area of optoelectronic functional materials (including photosensitive materials, light-emitting materials, liquid crystal materials, organic/inorganic semiconductor materials, etc.) and thin-film semi-conductor devices (including LED, LCD, and thin-film solar cells, etc.) thereof, chemistry, biochemistry and pharmaceutical. She also completed almost 100 international search reports for international patent applications (PCT applications).

Lin Chen received her Bachelor of Science and Bachelor of Law double degree from the Beijing Normal University, where she majored in Applied Chemistry and completed a minor in Law. Then she earned her Ph.D. in Polymer Chemistry & Physics from the Peking University, and her LL.M in Intellectual Property from the George Washington University Law School.

Jianqiang (Steve) Guo



2020年从美国里士满大学法学院获得法律博士学位后,郭先生加入华盛顿特区的Maier & Maier律师事务所,负责中国业务开拓,专利申请和诉讼,以及知识产权业务咨询等工作。此前,郭先生曾经为美国一家精品律师事务所和纳斯达克(Nasdaq)公司工作,帮助进行专利申请和客户开拓。郭先生还是世界知识产权组织WIPO学院专家库成员和高级辅导老师, 兼职辅导WIPO知识产权远程教育中文课程。