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.


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 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 52 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 18 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.

Recognitions and Awards

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 has been named one of Intellectual Property Today’s most influential people in IP law, he was recognized by IAM Patent 1000 in the field of Patent Law, and he has been named among both Best Lawyers and International Advisory Experts leading attorneys in the field of Intellectual Property.

Most recently:

  • Mr. Kunin was recently included in the 2024 edition of The Best Lawyers in America® for Patent Law.
  • In June of 2022 he was again named one of Managing Intellectual Property’s “IP stars.”
  • Mr. Kunin has been selected as a 2022 Go To Intellectual Property Lawyer by Virginia Lawyers Weekly and his profile is set to appear in the September 26, 2022 issue of Virginia Lawyers Weekly.
  • On August 18, 2022, Mr. Kunin was selected by his peers for recognition of professional excellence in the 29th edition of The Best Lawyers in America® for work in Patent Law.

Representative Patent Expert Witness Engagements

  • Allergan Sales* v. Sandoz, (Civil Action No. 2 :17-cv-10129-CCC-MF), United States District Court for the District of New Jersey [report & deposition]
  • Amarin Pharma* v. Hikma Pharms, (Case No. 2 :16-cv-02525-MMD-NJK), United States District Court, District of Nevada [rebuttal report & deposition]
  • AstraZeneca Canada, Inc. v. Teva Canada Ltd*, (Case No. T-592-21), Canadian Federal Court (Ottawa), [report]
  • Beacon Point Capital v. Philips Electronics North America* (AAA Case No. 50-20-0700-0029), American Arbitration Association [report, deposition, and arbitration hearing]
  • bioMerieux v, Hologic et al.*(Civil Action No. 18-21-LPS-CJB), United States District Court for the District of Delaware [reply report & deposition]
  • Black Horse Capital* v. Auxilium Pharms., Inc., (AAA Case No. 01-20-000-3951), American Arbitration Association [report]
  • Boehringer Ingelheim Pharms, Inc.* v. Aurobindo Pharms USA, Inc. et al. (Civil Action No. 17-7887 (MAS)(LHG), United States District Court for the District of New Jersey [report & deposition]
  • Boston Scientific Corp., Inc.* v. Cook Group, Inc. et al. (Civil Action No. 1:17-cv-03448-JRS-MJD, United States District Court for the Northern District of Indiana, Indianapolis Division [report & deposition]
  • Comcast Cable Communications, LLC* v. Rovi Guides, Inc., Inter Partes Review No, IPR2020-00787, USPTO PTAB [declaration]
  • 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, deposition & trial]
  • Genzyme Corp.* v. Synpac (AAA ICDR Case No. 01-20-000o-5081), American Arbitration Association [report, rebuttal report & Arbitration Hearing]
  • 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]
  • 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 & trial]
  • 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 Automated Storage and Retrieval Systems, ITC Investigation No. 337-TA-1228, United States International Trade Commission, Washington, D.C. [report for Ocado*, deposition, witness statement & trial]
  • In re Certain Knitted Footware, ITC Investigation No. 337-TA-1289, United States International Trade Commission, Washington, D.C. [report for Nike*]
  • In re Certain Vehicle Control Systems, Vehicles Containing the Same and Components Thereof, ITC Investigation No. 337-TA-1235, United States International Trade Commission, Washington, D.C. [report for Porsche & VW* & deposition]
  • Lear* v. NHK Seating, (Case No. 2:18-cv-10613-LJM-RSW), United States District Court, Eastern District of Michigan, Southern Division [report, deposition & declaration]
  • Magna Mirrors of America* v. SMR Automotive Systems, (C.A. No. 1:17-cv-00077-RJJ-PJG), United States District Court, Western District of Michigan [report & deposition]
  • Manufacturing Resources, Inc v. Civiq Smartscapes, LLC*, (Civil Action No. 17-269-RGA), United States District Court for the District of Delaware [report, reply report & deposition]
  • MasterObjects, Inc. v. Amazon.com, Inc.*, (Case No. 3:20-cv-08103-WHA), United States District Court for the Northern District of California [report & deposition]
  • Merial, Inc. v. Intervet International B.V.*, (Case No. 0047402-78.2018.4.02.5101), 31 Vara Federal da Secao Judiciaria do Rio de Janeiro (Brazil) [declaration]
  • nCap Licensing, LLC v. Apple, Inc.*, (Case No. 2:17-cv-00905), United States District Court, District of Utah, Central Division [report]
  • Novartis* v. Regeneron, (Case No. 1:18-cv-0234-DLC), United States District Court, Southern District of New York [report & deposition]
  • NuVasive, Inc.* v. Alphatec Holdings, Inc., (Case No. 3:18-cv-00347-CAB-MDD), United States District Court, Southern District of California, San Diego Division [report & deposition]
  • Omni MedSci, Inc. v. Apple, Inc.*, (Case No. 2:18-cv-00134), United States District Court, Eastern District of Texas [report]
  • Palomar Techs.* v. MSRI Systems, (Civil Action No. 1:18-cv-10236-FDS), United States District Court, District of Massachusetts [report, deposition, and trial]
  • Ravgen, Inc*. v. Quest Diagnostics, Inc., (Case No. 2:21-09011-RGK (GJSx)), United States District Court, Central District of California [report & deposition]
  • 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]
  • E. Fred Schubert v. Lumileds, LLC*, (Case No. 1:12-cv-924-MN), United States District Court, District of Delaware [report & deposition]
  • Semicaps PTE LTD v. Hamamatsu Corporation et al. (Case No. 17-cv-03440-DMR), United States District Court, Northern District of California [rebuttal report]
  • The Sherwin-Williams Co. v. PPG Industries, Inc.*, (Case No. 2:17-cv-01023-JFC), United States District Court, Western District of Pennsylvania [report & deposition]
  • Taiho Pharmaceutical Co., LTD* v. Natco Pharma LTD et al., (Civil Action No. 19-2368-CFC), United States District Court, District of Delaware [report; supplemental report & deposition]
  • Trading Technologies International, Inc.* v. IBG LLC et al., (Case No. 1:10-CV-00715), United States District Court, Northern District of Illinois, Eastern Division [report & deposition]
  • Trading Technologies International, Inc.* v. IBG LLC et al., (Case No. 1:10-CV-00715), United States District Court, Northern District of Illinois, Eastern Division [report & deposition]
  • Ultravision Techs., LLC v. Samsung Elecs., Co. et al*., (Case No. 2:19-CV-00252-JRG-RSP), United States District Court, Eastern District of Texas, Marshall Division [report]
  • W.R. Grace, Inc.* v. Elysium Health, (C.A. No. 1:20-1098-CFC-JLH), United States District Court, District of Delaware [report]
  • Zest Labs, Inc. v. Walmart, Inc.*, (Case No. 4;18-cv-00500-JM, United States District Court, Eastern District of Arkansas [report, deposition & declaration]

Daniel J. Ehrlich

Daniel Ehrlich is a registered patent attorney and practices all aspects of intellectual property law, including the prosecution and litigation of utility patents, design patents, and trademarks. Daniel has experience working across a variety of technological disciplines, including mechanical engineering, the Internet of Things, software, electrical and computer engineering, and medical device technologies.

Daniel received his Bachelor of Science degree from Vanderbilt University, where he majored in Engineering Science with a focus in technology based entrepreneurship and minored in Economics. The confluence of his pursuits at Vanderbilt led Daniel to pursue a career in intellectual property law. After graduating from Vanderbilt, Daniel worked as a law clerk for a patent litigation firm in Chicago, Illinois. Daniel continued his education at Villanova University School of Law, graduating cum laude. While at Villanova, Daniel served on the Environmental Law Journal and was a member of the Phi Delta Phi Legal Honor Society.


Timothy J. Maier

Mr. Maier is a registered Patent Attorney and practices all aspects of Intellectual Property Law. Mr. Maier’s practice includes patent preparation and prosecution; patent and trademark litigation; design patents, trademark oppositions, patent reissue and reexamination proceedings; interference practice; strategic domestic and international patent and trademark portfolio development and management; patentability, validity, invalidity, infringement, freedom to operate, design around opinions and counseling, patent portfolio landscape analysis and due diligence opinions. Mr. Maier’s technical expertise includes various aspects of electrical engineering, electro-mechanical, mechanical, industrial, wireless technology, software enabled systems, financial systems and telecommunication engineering. Mr. Maier has serviced clients in highly competitive technical areas, including, medical devices, RFID technology, financial products, telecommunications, consumer electronics, cosmetic devices, packaging, semiconductors, e-commerce software, optics, and business methods.

Mr. Maier’s experience and expertise most recently has focused on providing a range of patent services to clients and developing patent strategies that complement the client’s business objectives. In particular, he enjoys developing and managing patent portfolios for the world market, for both start-up, middle market and Fortune 500 companies. To this end, he also analyzes competitors’ patent portfolios and products to counsel clients regarding enhancement and enforcement of their patent portfolio, potential investment of contemplated products, strategic design-around, and acquisition of technology.

Prior to founding Maier & Maier PLLC , Mr. Maier was formerly an attorney with Oblon, Spivak, McClelland, Maier & Neustadt P.C. .

Mr. Maier received his Bachelor of Science from Vanderbilt University and Masters in Telecommunications Engineering from George Mason University School of Engineering and his Law degree from George Mason University School of Law. Mr. Maier completed the Intellectual Property Law sequence while attending George Mason University School of Law, an intense concentration in intellectual property law.

Mr. Maier is licensed to practice before the United States Patent Office, Supreme Court of Virginia, Eastern District Court of Virginia, and the Court of Appeals for the 4th Circuit. He is a member of the Virginia State Bar (VSB), American Bar Association (ABA Patents, Trademarks and Copyright Divisions), Licensing Executives Society (LES), Association Internationale pour la Protection de la Propriété Intellectuelle (AIPPI, published articles) and American Intellectual Property Association (AIPLA, elected to two year committee term).

Currently Mr. Maier is a faculty member with Patent Resource Group, providing lectures around the United States to broad audiences on patent prosecution and enforcement in Asian countries, including Japan, Korea and China. and is an author for www.postgrant.com , a leading intellectual property law blog .


Christopher J. Maier

Chris Maier is a registered patent attorney and practices all aspects of patent prosecution and patent litigation, including inter partes review proceedings and ex parte reexamination at the USPTO, international patent portfolio development and management, and opinion work. Chris has experience working across a variety of technologies, including electrical and computer engineering, software, mechanical engineering, and medical device technologies.

Prior to becoming a patent attorney Chris worked at the United States Patent and Trademark Office (USPTO) as a patent examiner. Chris specialized in flat panel display technology as well as associated device driving software and computer control and peripheral devices.

Chris is a frequent lecturer on the latest strategies and trends in intellectual property for both U.S. and international audiences. Chris previously acted as a committee chair for the American Intellectual Property Law Association (AIPLA) and as delegate for numerous AIPLA domestic and international meetings. Additionally, he previously served as a faculty member for the Patent Resources Group (PRG).