Lin Chen

Lin Chen is a technical specialist for 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

郭建强先生从事知识产权工作二十余年,尤其专注于专利领域。

郭先生从2000年起在中国国家知识产权局开始职业生涯,先后在中国专利局担任专利审查员五年,在专利复审委员会担任主审员、合议组组长和副处长12年。2010年郭先生作为技术调查官在最高人民法院民三庭(知识产权)工作一年,负责专利案件的技术调查。2011年起郭先生晋升为专利复审委员会副处长,协助管理过三个技术申诉处室,带领过20人左右的审查员团队。郭先生共计审理了一千余件的专利申请、专利复审和无效、以及专利侵权等案件,技术领域涉及机械、物理、电子和材料等。

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。


Max Kaganov

Max Kaganov is a registered patent attorney and practices all aspects of intellectual property law, including utility patent and design patent drafting and prosecution, freedom-to-operate and infringement opinions, and trademark prosecution, oppositions, and cancellations. Max’s utility patent experience spans a variety of arts, such as mechanical engineering, medical devices, RFID devices and the manufacture thereof, wind turbines, as well as batch production, electrical, and software technologies. A particular focus of Max’s practice is the drafting and prosecution of design patents.

Max received his Bachelor of Arts degree from Williams College, where he majored in chemistry with a focus on physical chemistry and materials science. He obtained his Juris Doctor, in the patent law specialty track, from George Mason University School of Law. A native speaker of Russian and proficient in Spanish, Max has obtained  patent protection in the United States for Eastern European and Latin American clients. Max is registered to practice before the US Patent and Trademark Office, the Virginia State Bar, and the Florida Bar.


Michael Youssef

Michael Youssef is an electrical and computer engineer with a Bachelor of Science degree from Rutgers University, where he studied the latest improvements in fields such as artificial intelligence, automation, analog and digital circuit design, and digital signal processing. He has applied these skills in various projects throughout his academic career. Michael has experience working with a team on intricate projects, including both software and hardware design.

Michael is currently a registered patent agent as well as a student at George Mason University Antonin Scalia Law School, where he is a J.D. candidate.


Michael J. Collins

Michael Collins has twenty-nine years of experience litigating patent, trade secret, unfair competition and other technology-related matters. In recent years, his practice has concentrated on patent litigation, representing both patent owners and defendants in federal district courts throughout the country. He has also represented clients in post-grant proceedings before the Patent Trial and Appeal Board, Section 337 investigations before the International Trade Commission and appeals before the Federal Circuit. In addition to patent litigation, Michael has substantial experience representing both plaintiffs and defendants in trade secret matters in the state courts of both Texas and Florida. He was named a “Texas Super Lawyer” in the area of Intellectual Property Litigation in each of the years from 2013 through 2018.

Michael has handled cases involving a wide range of technologies, including semiconductors, oil and gas production, materials science, software, consumer electronics, wireless telecommunications systems, LED display panels, vehicle location tracking, optics, building structures, medical devices, food processing, transportation, conventional and nuclear power, petrochemicals, industrial valves, combined cycle gas turbines, petrochemical catalyst handling methods, corrugated packaging, and flywheel energy storage systems.


Kangseok Kim

Kangseok Kim is a member of the Washington D.C Bar and is admitted to practice before the United States Patent and Trademark Office.  Kangseok brings experience across of a range of technological disciplines and has formal training in electrical engineering.  He earned his Juris Doctor from Handong International Law School. Prior to law school, Kangseok double majored in Computer Science and Electronic Engineering at Handong Global University.


Dennis Ahearn

Dennis Ahearn is senior counsel for Maier and Maier.  Previously, Dennis was IP and Technology Law Counsel at Science Applications International Corporation (“SAIC”), Associate General Counsel for Intellectual Property and Technology Law at Lockheed Martin Corporation, and Chief IP Counsel at COMSAT Corporation.  Dennis has a wealth of experience in procuring, managing and enforcing intellectual property rights globally for these and other corporations in major technical areas, and in data rights in Government Contracts, Government cyber-security requirements, IP rights in mergers and acquisitions and other transactions, Open Source Software acquisition, usage and licensing, trademark portfolio development and management, internet usage, and litigation management.  Additionally, Dennis is highly experienced in providing IP development, protection, usage, licensing, sale, and other monetization counsel.  His areas of interest include aerospace and defense, advanced telecommunications, commercial space activities, artificial intelligence and robotics, alternative energy, and internet activities and cyber-security. Dennis received his Bachelor’s Degree in Physics from Yale, completed his J.D. at the University of San Francisco and served in the U. S. Air Force before beginning his law career.


Robert A. Madsen

Bob Madsen is a registered patent agent and practices patent prosecution in the areas of biotechnology, pharmaceuticals, chemicals, foods, cosmetics, and mechanical arts.

Prior to joining Maier & Maier, Bob practiced patent prosecution for over 12 years in an intellectual property law firm working with foreign clients. Before becoming a patent agent, Bob was a patent examiner for over 6 years at the United States Patent and Trademark Office where he examined patent applications in the chemical arts. He also worked for over 8 years as a chemical engineer in the food and pharmaceutical industries.

Bob received a Bachelor of Science degree in Chemical Engineering from the University of Wisconsin at Madison.


Stephen Kunin

Mr. Kunin is a Partner at Maier & Maier PLLC, where he specializes in all areas of patent practice. His expertise includes post-issuance proceedings at the United States Patent Office, opinions of counsel, advising attorneys and our clients on complex patent prosecution matters, patent litigation strategy, and United States Patent Office patent policy, practice and procedure, for which he is highly sought after for expert testimony. Mr. Kunin has presented expert testimony covering numerous subjects, including:

  1. Duty of candor and good faith (inequitable conduct)
  2. Subject matter eligibility and utility
  3. Restriction practice and double patenting
  4. Inventorship
  5. Declaration/affidavit practice
  6. Certificates of correction
  7. Petitions practice
  8. Reexamination and reissue
  9. Interferences
  10. Ownership
  11. Statutory disclaimers
  12. Written description
  13. Date of public availability of abandoned applications referenced in prior art publications
  14. Prosecution laches
  15. Right of priority under Paris Convention

In addition to serving as an expert witness, Mr. Kunin has vast experience in providing lectures on recent US patent law developments across the USA, Europe and the Far East.  He has more than 48 years of experience in the patent profession.

After graduating from Washington University (MO) with a Bachelor’s in Science in Electrical Engineering with honors in 1970, Mr. Kunin embarked on his lengthy career over nearly 35 years at the United States Patent Office. He received his JD in law degree with honors in 1975 from The National Law Center at George Washington University. He held many significant positions with the USPTO, which culminated with ten years of service as the Deputy Commissioner for Patent Examination Policy from 1994-2004. While at the USPTO, he was a leading voice in forming patent policy, in revising examination guidelines on subject matter eligibility, utility, non-obviousness and written description, and in establishing reissue and reexamination procedures. Mr. Kunin spearheaded revisions to the Rules of Practice and Manual of Patent Examining Procedure, making key changes to chapters on ex parte reexamination, reissue, and inter partes reexamination.

Since leaving the PTO, Mr. Kunin has been a practicing patent attorney for more than 13 years counseling clients in post-grant patent proceedings at the USPTO and routinely serves as an expert witness in patent litigation cases. He is a registered patent attorney with the USPTO, and admitted to practice in the Commonwealth of Virginia, before the U.S. Court of Appeals for the Federal Circuit, and before the United States Supreme Court. From 2005 through 2017, Mr. Kunin served as the Intellectual Property Program Director at the Antonin Scalia School of Law at George Mason University, while teaching patent and intellectual property law classes as an adjunct professor of law.

Over the course of his illustrious career, Mr. Kunin has received many notable awards, including the Meritorious Executive Presidential Rank Award, The Vice President’s Reinventing Government Hammer Award , four Gold Medals, three Silver Medals, and one Bronze Medal from the Department of Commerce, and a Career Achievement Award from the USPTO. He was named one of Intellectual Property Today’s most influential people in IP law, in May of 2018 he was named one of Managing Intellectual Property’s “IP stars,” and he was also recognized by IAM Patent 1000 in the field of Patent Law.


Upcoming Speaking Engagements


Representative Patent Expert Witness Engagements

  • Afilias PLC v. Architelos, Inc., et al.* (No. 1:15cv0014 (LMB/JFA)), United States District Court, Eastern District of Virginia [report, deposition & trial]
  • American Sales Company, LLC, Rochester Drug Co-Operative, Inc. v. Pfizer, Inc., G.D. Searle LLC and Pfizer Asia Pacific PTE, Ltd.* (Civil Action Nos. 2 :14-cv-00361-AWA-DEM), United States District Court, Eastern District of Virginia [rebuttal report & deposition]
  • Amgen Inc. et al. * v. Sanofi-Aventis et al. (Civil Action No. 1:14-CV-01317-SLR), United States District Court, District of Delaware [report & deposition]
  • Amneal Pharmaceuticals, LLC v. Supernus Pharmaceuticals, LLC* (Case Nos. IPR2013-00368,00371 and 00372) USPTO PTAB [declarations and deposition]
  • Bal Seal Engineering, Inc.* v. Nelson Products, Inc., Carl Nelson, and DOES 1-5 (Case No. SACV13-01880 JLS (KESx), United States District Court for the Central District of California [declaration & deposition]
  • Cave Consulting Group, Inc.* v. OptumInsight, Inc. (Case No. 3:15-cv-03424). U.S. District Court for the Northern District of California, San Francisco Division [report, amended report, supplemental report & deposition]
  • DRIT LP* v. Glaxo Group Limited and Human Genome Sciences, Inc. (C.A. No. N16C-07-218 WCC CCLD), Superior Court of the State of Delaware [report & depostion]
  • Elbit Systems Land and C4I Ltd., et al.* v. Hughes Network Systems, LLC et al., (C.A. No. 2:15-cv-00037-RWS-RSP), United States District Court for the Eastern District of Texas, Marshall Division [report, rebuttal report & deposition]
  • Eli Lilly & Company* v. Government of Canada, (Case No. UNCT/14/2), In the Arbitration under the Arbitration Rules of the United Nations Commission on International Trade Law and the North American Free Trade Agreement [report, reply report & arbitration]
  • Energy Heating, LLC, and Rocky Mountain Oil Field Services, LLC and Marathon Oil Corporation and Marathon Oil Company* v. Heat-On-The Fly, LLC and Superheaters North Dakota, LLC (Case No. 4:13-cv-010-RRE-ARS), United States District Court for the District of North Dakota, Northwestern Division [report, deposition & trial]
  • Enventure Global Technology, Inc.* v. Mohawk Energy Ltd., et al. (Civil Action No. 4:15-cv-1053), United States District Court for the Southern District of Texas [rebuttal report & declaration]
  • Enzo Life Science, Inc. v. Abbott Laboratories et al.* (Civil Action No. 12-274-LPS), United States District Court for the District of Delaware [report, reply report & deposition]
  • Ethox Chemicals, L.L.C. et al.* v. The Coca-Cola Company (Civil Action No. 6:12-cv-01682-TMC), United States District Court, District of South Carolina, Greenville Division [report, deposition, supplemental report & trial]
  •  Fresenius Kabi USA, LLC v. Fera Pharmaceuticals, LLC, Oakwood Laboratories, LLC and Maia Pharmaceuticals, Inc.* (Civil Action No. 2:15-cv-3654-KM-MAH), United States District Court, District of New Jersey [report, reply report & deposition]
  • Gilbert P. Hyatt v. Joseph Matal*, (Civil Action Nos.: 1:09-cv-1864 (RCL), 1:09-cv-1869 (RCL), 1:09-cv-1872 (RCL) and 1:05-cv-2310 (RCL)), United States District Court, District of Columbia [report, rebuttal report deposition & trial]
  • Gilead Sciences, Inc. and Emory University v. Mylan Inc. and Mylan Pharmaceuticals Inc.*, (Case No. 1:14-cv-99-IMK-JSK), United States District Court, Northern District of West Virginia, Clarksburg [report]
  • Greg Barela v. Brock USA, LLC, d/b/a Brock International*, JAG Arbitration No. 2015-1031A (The Honorable Boyd N. Boland) [report & declaration]
  • IFM Therapeutics, Inc.* v. Lycera Corp., C.A. 17-cv-608 (LPS), United States District Court, District of Delaware [report]
  • Immunex Corporation, Amgen Manufacturing, Limited and Hoffman-La Roche Inc.* v. Sandoz Inc., Sandoz International GMBH and Sandoz GMBH, (Civil Action No. 2:16-cv-01118-CCC-MF), United States District Court for the District of New Jersey [report & deposition]
  • Immunomedics, Inc. v. Roger Williams Medical Center, Richard P. Junghans, M.D., Ph.D., and Steven C. Katz, M.D.* (Civil Action No. 2:15-cv-04526-JLL-SCM), United States District Court for the District Of New Jersey [report]
  • In re Biogen ’755 Patent Litigation, Civil Action No. 2:10-cv-02734 (CCC)(JBC), United States District Court, District of New Jersey [report for EMD Serono, Inc. and Pfizer, Inc.* and deposition]
  • In re Certain Dental Implants, (Investigation No. 337-TA-934), United States International Trade Commission, Washington, D.C. [report for Nobel Biocare*, deposition, rebuttal witness statement]
  • In re Certain Recombinant Factor VIII Products (Investigation No. 337-TA-956), United States International Trade Commission Washington, D.C. [report, rebuttal witness statement for Baxter* & deposition]
  • iRadar SDN BHD v. Nuctech Company Limited and Tsinghua University*, (Guaman Sivil Ni. 22IP-61-11/2015), Dalam Mahkamah Tinggi Malaya Di Kuala Lumpur [affidavit]
  •  Janssen Biotech, Inc. & New York University* v. Celltrion Healthcare Co., LTD., Celltrion, Inc. and Hospira, (Civil Action No. 1:15-cv-10698). United States District Court, District of Massachusetts [declaration]
  • Legacy Separators, LLC v. Halliburton Energy Services, Inc. and J. Wayne Richards*, Civil Action No. 4-14-cv-02081 (Lead Case), United States District Court, Southern District of Texas [report]
  • LEO Pharma A/S, LEO Laboratories Limited, and LEO Pharma, Inc., v. Actavis Laboratories UT, Inc.*, (C.A. No. 16-333-JFB-SRF), United States District Court for the District of Delaware [report]
  • LifeNet Health* v. LifeCell Corporation, (Civil Action No. 2:13cv486-HCM-DEM), United States District Court, Eastern District of Virginia, Norfolk Division [report, deposition & trial]
  • Lifetime Products, Inc. v. Maxchief Investments, Ltd. et al.*, (American Arbitration Association Case No. 01-15-0003-4448), AAA International Centre for Dispute Resolution [ report ]
  • MacroPoint, LLC* v. FourKites, Inc, (Civil Action No. 1:15-cv-1002), United States District Court for the Northern District of Ohio [declaration]
  • Masimo Corporation* v. Mindray DS USA, INC. and Shenzhen Mindray Bio-Medical Electronics Co., LTD, (Civil Action No. 2:15-cv-0457 (SDW)(SCM)), United States District Court, Central District of California, Southern Division [rebuttal report and deposition]
  •  Nalco Company, LLC* v. Baker Hughes Incorporated and Baker Petrolite Corporation, (Civil Action No. 4:09-cv-01885), United States District Court, Southern District of Texas [report]
  • Nalu Kai Incorporated, dba “Naish Sails Hawait”* v. Hawaii Airboards, LLC, (Case No. 1:14-cv-112-LEK-RLP), United States District Court, District of Hawaii [report]
  • Nippon Steel & Sumitomo Metal Corporation* v. POSCO and POSCO America Corporation, (Civil Action No. 2:12-cv-02429-DMC-MF), United States District Court, District of New Jersey [report & deposition]
  • ORBCOMM, Inc.* v. CalAmp Corp., (Civil Action No. 3:16-cv-208), United States District Court, Eastern District of Virginia [report & deposition]
  • Papst Licensing GmbH & Co. KG v. LG Electronics, Inc. et al., Samsung Electronics Co., Ltd., et al., ZTE (USA), Inc., Lenovo (United States) Inc. and Motorola Mobility, Inc.,* (Case Nos. 6:15-cv-1099-RWS, 6:15-cv-1102-RWS, 6:15-cv-1100-RWS and 6:15-cv-1111-RWS), United States District Court for the Eastern District of Texas [report]
  • Sanofi-Aventis U.S. LLC, Genzyme Corp., and Regeneron Pharmaceuticals, Inc. v. Immunex Corporation* (Case IPR2017-01879), United States Patent and Trademark Office, before the Patent Trial and Appeal Board [declaration]
  • Sanofi-Aventis U.S. LLC, Genzyme Corp., and Regeneron Pharmaceuticals, Inc. v. Immunex Corporation* (Case IPR2017-01884), United States Patent and Trademark Office, before the Patent Trial and Appeal Board [declaration]
  • Separation Design Group IP Holdings, LLC v. Inogen, Inc.*, Case No. 2:15-cv-08323-JAK-(JPRx), United States District Court, Central District of California [report, declaration]
  • Shire LLC* v. Amerigen Pharmaceuticals Limited, (Civil Action No. 14-6095 (RMB/JS)), United States District Court, District of New Jersey [report, & deposition]
  • TAS Energy Inc.* v. Stellar Energy Americas, Inc. (Case No. 8:14-cv-3145-T-30MAP), United States District Court, Middle District of Florida [declaration & counter-declaration]
  • The University of Utah v. Max-Planck-Gesellschaft E.V., Max-Planck-Innovation GmbH, Whitehead Institute for Biomedical Research, Massachusetts Institute of Technology, Alnylam Pharmaceuticals, Inc., Robert L. Caret, James R. Julian, Christina M. Wilda and James P. McNamara*, (Civil Action No. 1:11-cv-10484), United States District Court, District of Massachusetts [report & deposition]
  •  Wisconsin Alumni Research Foundation* v. Apple Inc., (Case No. 14-cv-00062-WMC), United States District Court, Western Division of Wisconsin [report & deposition]

Andrew Ramos

Andrew Ramos is an associate at Maier & Maier, PLLC. He earned his J.D. from The George Washington University Law School where he focused on patent law, especially patent litigation and post-grant review. While in law school, he was the Executive Production Editor for the American Intellectual Property Law Association Quarterly Journal and wrote his note on the impact of changes to the Federal Rules for Civil Procedure on patent litigation. He’s studied trends in the PTAB as part of his role as a contributing editor of The PTAB Handbook, where he’s gained extensive knowledge of IPR procedure and PTAB practice. Prior to joining Maier & Maier as a full-time associate, he spent time litigating with two other firms, including trademark infringement casework, before spending six months with Maier & Maier as a student associate.

Andrew’s technical background is in Physics, which he studied at both Columbia University and George Washington University, with his research focusing on instrumentation, specifically on building a muon telescope. His coursework prepared him for a wide array of technical areas as he studied electrodynamics, mechanics, solar technology, alternative energy engineering, biophysics, organic chemistry, and computer programming.