People

Search Language

中文(台灣) / Traditional Chinese | Use language selector above (below, on mobile) to search additional languages
  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  • Search
  • Selected filters
  • x(business development)

1424 items matching filters

450076

Practice:

  • Intellectual Property
  • Patents
  • Life Sciences & HealthTech
  • Supreme Court and Appellate

Irena Royzman, Ph.D. Partner

New York

With a Ph.D. in biology from MIT and the Whitehead Institute, where she was a NSF fellow, Irena represents plaintiffs and defendants in their most complex pharmaceutical and biotech patent cases. Over the last 20 years, pharmaceutical and biotechnology innovators have relied on Irena again and again for cases involving small molecules, biologics, recombinant DNA technology, gene therapy, gene editing, manufacturing processes, formulations and drug-eluting medical devices, including numerous multi-billion dollar cases involving many of the world’s best-selling drugs.

Irena has significant experience in litigation under the Hatch-Waxman Act (ANDA and 505(b)(2) actions) and the Biologics Price Competition and Innovation Act (BPCIA), as well as inter partes review (IPR) proceedings, license disputes and matters with parallel ex-U.S. litigation and proceedings in foreign patent offices. Irena also helps life sciences companies and organizations develop the law in the most important cases for the biopharma industry. She has been principal counsel on numerous amicus briefs to the United States Supreme Court and the Federal Circuit in key biopharma cases.

For plaintiffs, Irena has successfully defended generic challenges to patents protecting blockbuster medical therapies, including multi-billion dollar cancer, antiviral, diabetes and anti-psychotic drugs, including recently obtaining attorneys’ fees in a hard-fought ANDA action. She also represents innovators in biosimilar litigation from its outset, including in some of the first cases under the BPCIA involving antibodies. Irena also represents clients in innovator vs innovator disputes. For defendants, she defeated a $530 million claim of patent infringement of a competitor’s biotech patent, obtaining dismissal of all claims and discovery sanctions against the patent owner. In another high-stakes case, she obtained summary judgment of noninfringement and exclusion of plaintiff’s experts under Daubert as well as a full award of attorneys’ fees. A registered patent attorney, Irena also handles inter partes review (IPR) proceedings. For patent owners, she has obtained denial of IPR for patents protecting blockbuster drugs and has leveraged IPR for defendants to obtain freedom to operate.

Irena also coordinates U.S. proceedings with parallel ex-U.S. litigation and proceedings in foreign patent offices, recently obtaining freedom to operate for a biotech innovator’s gene therapy. She provides strategic counseling in biologics and pharmaceuticals and advises clients on their IP portfolios and transactions. Irena also represents clients in high-stakes license disputes involving biotech patents, and, in a dispute concerning the use of a recombinant protein as an enzyme replacement therapy, obtained one of the largest settlement awards over the life of the contract.

Chambers USA has recognized Irena as a leading lawyer in intellectual property, where clients have described her as “excellent,” “knowledgeable, aggressive,” “knows the science forward and backward” and “an incredibly smart lawyer.” Benchmark Litigation named her one of the “Top 250 Women in Litigation” for the last eight years and a litigation star in intellectual property. Irena was also named to the Crain’s New York Business list of “Notable Women in Law.” She is also recognized as a leading lawyer by Legal 500. Irena writes and lectures widely on biopharma patent issues and biosimilar litigation. Irena also is frequently quoted on patent-related issues, including in the Washington Post, Financial Times, Nature Biotechnology, Bloomberg and Pink Sheet.

450076

Practice:

  • Intellectual Property
  • Patents
  • Life Sciences & HealthTech
  • Supreme Court and Appellate

Irena Royzman, Ph.D. Partner

New York

With a Ph.D. in biology from MIT and the Whitehead Institute, where she was a NSF fellow, Irena represents plaintiffs and defendants in their most complex pharmaceutical and biotech patent cases. Over the last 20 years, pharmaceutical and biotechnology innovators have relied on Irena again and again for cases involving small molecules, biologics, recombinant DNA technology, gene therapy, gene editing, manufacturing processes, formulations and drug-eluting medical devices, including numerous multi-billion dollar cases involving many of the world’s best-selling drugs.

Irena has significant experience in litigation under the Hatch-Waxman Act (ANDA and 505(b)(2) actions) and the Biologics Price Competition and Innovation Act (BPCIA), as well as inter partes review (IPR) proceedings, license disputes and matters with parallel ex-U.S. litigation and proceedings in foreign patent offices. Irena also helps life sciences companies and organizations develop the law in the most important cases for the biopharma industry. She has been principal counsel on numerous amicus briefs to the United States Supreme Court and the Federal Circuit in key biopharma cases.

For plaintiffs, Irena has successfully defended generic challenges to patents protecting blockbuster medical therapies, including multi-billion dollar cancer, antiviral, diabetes and anti-psychotic drugs, including recently obtaining attorneys’ fees in a hard-fought ANDA action. She also represents innovators in biosimilar litigation from its outset, including in some of the first cases under the BPCIA involving antibodies. Irena also represents clients in innovator vs innovator disputes. For defendants, she defeated a $530 million claim of patent infringement of a competitor’s biotech patent, obtaining dismissal of all claims and discovery sanctions against the patent owner. In another high-stakes case, she obtained summary judgment of noninfringement and exclusion of plaintiff’s experts under Daubert as well as a full award of attorneys’ fees. A registered patent attorney, Irena also handles inter partes review (IPR) proceedings. For patent owners, she has obtained denial of IPR for patents protecting blockbuster drugs and has leveraged IPR for defendants to obtain freedom to operate.

Irena also coordinates U.S. proceedings with parallel ex-U.S. litigation and proceedings in foreign patent offices, recently obtaining freedom to operate for a biotech innovator’s gene therapy. She provides strategic counseling in biologics and pharmaceuticals and advises clients on their IP portfolios and transactions. Irena also represents clients in high-stakes license disputes involving biotech patents, and, in a dispute concerning the use of a recombinant protein as an enzyme replacement therapy, obtained one of the largest settlement awards over the life of the contract.

Chambers USA has recognized Irena as a leading lawyer in intellectual property, where clients have described her as “excellent,” “knowledgeable, aggressive,” “knows the science forward and backward” and “an incredibly smart lawyer.” Benchmark Litigation named her one of the “Top 250 Women in Litigation” for the last eight years and a litigation star in intellectual property. Irena was also named to the Crain’s New York Business list of “Notable Women in Law.” She is also recognized as a leading lawyer by Legal 500. Irena writes and lectures widely on biopharma patent issues and biosimilar litigation. Irena also is frequently quoted on patent-related issues, including in the Washington Post, Financial Times, Nature Biotechnology, Bloomberg and Pink Sheet.

431665

Practice:

  • Financial & Fintech Advisory
  • Strategic Advisory & Government Enforcement (SAGE)
  • Fintech

Christopher Witeck Partner

Washington, D.C.

Chris has an active practice representing financial services entities in negotiating a wide variety of corporate transactions, including company M&A, asset purchases and critical vendor and other third-party relationships. His clients include banks, mortgage companies and servicers, marketplace and other lenders, fintech and emerging payments providers and other business entities in the financial services industry.

Chris’ M&A work emphasizes transactions that involve regulatory risks and concerns or novel structures at the forefront of industry trends. He also represents buyers and sellers of mortgage loans and other consumer lending assets, including interests such as mortgage servicing rights. He regularly negotiates many varieties of servicing and subservicing contracts.

He also advises clients on outsourcing, joint venture and bank partner agreements, particularly in the fintech and e-commerce arena, providing years of experience addressing “true lender” issues. He also advises clients on loan repurchase and indemnity matters as well as corporate governance and compliance matters.

His regulatory practice focuses on advising lenders and servicers on matters involving the Real Estate Settlement Procedures Act (RESPA), including affiliated business arrangements, portfolio retention transactions and vendor management issues.

Chris is recognized by Chambers USA for Fintech: Payments & Lending, which cited his capabilities “advising on regulatory compliance, commercial contracts matters and transactional work, with notable expertise handling M&A in the financial services sector.”

He was previously Co-Managing Partner and a member of the partner board at Buckley LLP. Before attending law school, he worked at the U.S. Department of State.

431665

Practice:

  • Financial & Fintech Advisory
  • Strategic Advisory & Government Enforcement (SAGE)
  • Fintech

Christopher Witeck Partner

Washington, D.C.

Chris has an active practice representing financial services entities in negotiating a wide variety of corporate transactions, including company M&A, asset purchases and critical vendor and other third-party relationships. His clients include banks, mortgage companies and servicers, marketplace and other lenders, fintech and emerging payments providers and other business entities in the financial services industry.

Chris’ M&A work emphasizes transactions that involve regulatory risks and concerns or novel structures at the forefront of industry trends. He also represents buyers and sellers of mortgage loans and other consumer lending assets, including interests such as mortgage servicing rights. He regularly negotiates many varieties of servicing and subservicing contracts.

He also advises clients on outsourcing, joint venture and bank partner agreements, particularly in the fintech and e-commerce arena, providing years of experience addressing “true lender” issues. He also advises clients on loan repurchase and indemnity matters as well as corporate governance and compliance matters.

His regulatory practice focuses on advising lenders and servicers on matters involving the Real Estate Settlement Procedures Act (RESPA), including affiliated business arrangements, portfolio retention transactions and vendor management issues.

Chris is recognized by Chambers USA for Fintech: Payments & Lending, which cited his capabilities “advising on regulatory compliance, commercial contracts matters and transactional work, with notable expertise handling M&A in the financial services sector.”

He was previously Co-Managing Partner and a member of the partner board at Buckley LLP. Before attending law school, he worked at the U.S. Department of State.

Practice:

  • Financial & Fintech Advisory
  • Strategic Advisory & Government Enforcement (SAGE)
  • Fintech
  • Cyber, Privacy & Data Innovation
  • Mergers & Acquisitions
  • Blockchain & Digital Assets
  • Japan
  • China

Nathaniel Reisenburg Managing Associate

New York

Nathaniel counsels banks, blockchain exchanges, cryptocurrency issuers, financial institutions, technology companies, money transmitters, online gaming platforms, payment processors, and private equity firms. His practice includes services related to anti-money laundering, data collection and processing, internal investigations and risks assessments, money transmitter licensing, blockchain token offerings, mergers and acquisitions, money transmitter licensing, venture capital financing activities, and general corporate matters.

Following law school, Nathaniel co-founded a legaltech company in Japan, and developed the initial machine learning models and a front end used for an initial product offering. Nathaniel has since leveraged his development experience to communicate with and advise blockchain and machine learning ventures. In addition, Nathaniel has also lectured at Peking University in China, teaching constitutional law and an introductory class on U.S. legal principles, giving Nathaniel a unique perspective into the Chinese market.

Prior to joining Orrick’s New York office, he was an associate at the firm's Tokyo office. In addition, prior to law school, Nathaniel served for four years in the Canadian Army as an enlisted soldier tasked to conduct armored reconnaissance.  

Practice:

  • Financial & Fintech Advisory
  • Strategic Advisory & Government Enforcement (SAGE)
  • Fintech
  • Cyber, Privacy & Data Innovation
  • Mergers & Acquisitions
  • Blockchain & Digital Assets
  • Japan
  • China

Nathaniel Reisenburg Managing Associate

New York

Nathaniel counsels banks, blockchain exchanges, cryptocurrency issuers, financial institutions, technology companies, money transmitters, online gaming platforms, payment processors, and private equity firms. His practice includes services related to anti-money laundering, data collection and processing, internal investigations and risks assessments, money transmitter licensing, blockchain token offerings, mergers and acquisitions, money transmitter licensing, venture capital financing activities, and general corporate matters.

Following law school, Nathaniel co-founded a legaltech company in Japan, and developed the initial machine learning models and a front end used for an initial product offering. Nathaniel has since leveraged his development experience to communicate with and advise blockchain and machine learning ventures. In addition, Nathaniel has also lectured at Peking University in China, teaching constitutional law and an introductory class on U.S. legal principles, giving Nathaniel a unique perspective into the Chinese market.

Prior to joining Orrick’s New York office, he was an associate at the firm's Tokyo office. In addition, prior to law school, Nathaniel served for four years in the Canadian Army as an enlisted soldier tasked to conduct armored reconnaissance.  

Practice:

  • Intellectual Property
  • Trademark, Copyright & Media
  • Patents
  • Trade Secrets Litigation
  • U.S. International Trade Commission
  • Life Sciences & HealthTech

Sheryl Koval Garko Partner

Boston

Over the course of her career, she has represented clients ranging from Fortune 50 companies to start-ups in trademark, copyright, false advertising, and trade secret litigations and at trial. She has worked with leading technology companies and some of the most recognizable brands in the world, including New Balance, Williams-Sonoma, Carnival, and Microsoft. She has tried cases to both judges and juries in federal courts across the United States and is experienced practicing before the U.S. Patent and Trademark Office’s Trademark Trial and Appeal Board and the International Trade Commission. Through her trial work, she has developed deep expertise in litigating novel and complex damages issues in IP cases and leveraging survey work. 

Sheryl most recently earned a complete victory at trial on behalf of client Carnival in a patent and breach of contract matter related to theft of Carnival intellectual property. Following an 8-day trial in the Southern District of Florida, the jury deliberated for three hours and returned a verdict in favor of Carnival on all counts, awarding $21 million in damages.

She honed her skills in high profile, precedent setting cases. Sheryl represented Aereo against the major U.S. television networks in defense of its novel, industry-disrupting system for providing internet access to over-the-air broadcast television. That case ultimately went to the Supreme Court, which addressed copyright law issues of first impression. Sheryl currently represents Microsoft litigating novel issues related to the intersection of generative AI, copyright, and trademark law.

Having prepared countless cases for trial, Sheryl has a clear understanding of the importance of identifying litigation strategy early on to direct the case in a cost- effective and efficient manner. Sheryl also leverages her wealth of experience to counsel clients on strategies to protect intellectual property when avoiding litigation is a strategic business priority.

Having also litigated a number of patent cases throughout her career, she brings to each matter a unique understanding of the intersection of copyright, trademark, trade secret and patent law. A superb communicator, she is able to explain diverse areas of complex technology to a judge or jury.

Sheryl has been consistently named as one of the leading intellectual property litigators in the world by World Trademark Review 1000, a peer and client survey. In its 2017 publication, WTR 1000 described her as “'highly recommended’ for her ‘helpful and creative advice,’ which is ‘always of first-rate quality.’” In the 2018 edition, WTR 1000 stated that Sheryl “offers significant firepower to any contentious mandate.” In the 2021 edition, WTR 1000 said Sheryl ”puts her heart and soul into driving favorable outcomes.” In 2022 Sheryl and her team were lauded for being “tried and tested” in litigation and “emerging victorious in many forums. And in 2023, they were praised for “steering [clients] through complex litigation,” with work that was quick, efficient and “with the highest level of integrity.”

Sheryl is the Global Chair of Orrick's Women's Initiative and is the Co-Chair of Orrick’s Intellectual Property Business Unit.

She was named a 2017 Woman Worth Watching by Profiles in Diversity Journal. Sheryl was also singled out for Metropolitan Corporate Counsel’s Women in Business and the Law 2017 edition. In 2015, Massachusetts Lawyers Weekly named her one of the Top Women of Law and she received a 2015 Leadership Excellence Award from the National Diversity Council.

Practice:

  • Intellectual Property
  • Trademark, Copyright & Media
  • Patents
  • Trade Secrets Litigation
  • U.S. International Trade Commission
  • Life Sciences & HealthTech

Sheryl Koval Garko Partner

Boston

Over the course of her career, she has represented clients ranging from Fortune 50 companies to start-ups in trademark, copyright, false advertising, and trade secret litigations and at trial. She has worked with leading technology companies and some of the most recognizable brands in the world, including New Balance, Williams-Sonoma, Carnival, and Microsoft. She has tried cases to both judges and juries in federal courts across the United States and is experienced practicing before the U.S. Patent and Trademark Office’s Trademark Trial and Appeal Board and the International Trade Commission. Through her trial work, she has developed deep expertise in litigating novel and complex damages issues in IP cases and leveraging survey work. 

Sheryl most recently earned a complete victory at trial on behalf of client Carnival in a patent and breach of contract matter related to theft of Carnival intellectual property. Following an 8-day trial in the Southern District of Florida, the jury deliberated for three hours and returned a verdict in favor of Carnival on all counts, awarding $21 million in damages.

She honed her skills in high profile, precedent setting cases. Sheryl represented Aereo against the major U.S. television networks in defense of its novel, industry-disrupting system for providing internet access to over-the-air broadcast television. That case ultimately went to the Supreme Court, which addressed copyright law issues of first impression. Sheryl currently represents Microsoft litigating novel issues related to the intersection of generative AI, copyright, and trademark law.

Having prepared countless cases for trial, Sheryl has a clear understanding of the importance of identifying litigation strategy early on to direct the case in a cost- effective and efficient manner. Sheryl also leverages her wealth of experience to counsel clients on strategies to protect intellectual property when avoiding litigation is a strategic business priority.

Having also litigated a number of patent cases throughout her career, she brings to each matter a unique understanding of the intersection of copyright, trademark, trade secret and patent law. A superb communicator, she is able to explain diverse areas of complex technology to a judge or jury.

Sheryl has been consistently named as one of the leading intellectual property litigators in the world by World Trademark Review 1000, a peer and client survey. In its 2017 publication, WTR 1000 described her as “'highly recommended’ for her ‘helpful and creative advice,’ which is ‘always of first-rate quality.’” In the 2018 edition, WTR 1000 stated that Sheryl “offers significant firepower to any contentious mandate.” In the 2021 edition, WTR 1000 said Sheryl ”puts her heart and soul into driving favorable outcomes.” In 2022 Sheryl and her team were lauded for being “tried and tested” in litigation and “emerging victorious in many forums. And in 2023, they were praised for “steering [clients] through complex litigation,” with work that was quick, efficient and “with the highest level of integrity.”

Sheryl is the Global Chair of Orrick's Women's Initiative and is the Co-Chair of Orrick’s Intellectual Property Business Unit.

She was named a 2017 Woman Worth Watching by Profiles in Diversity Journal. Sheryl was also singled out for Metropolitan Corporate Counsel’s Women in Business and the Law 2017 edition. In 2015, Massachusetts Lawyers Weekly named her one of the Top Women of Law and she received a 2015 Leadership Excellence Award from the National Diversity Council.

461970

Practice:

  • Energy & Infrastructure
  • Renewable Energy

Tyler Conte Senior Associate

Houston; Miami

Tyler structures and negotiates a broad range of strategic transactions on behalf of sponsors, investors and lenders, including tax equity, cash equity, and debt financings, tax credit transfers, mergers and acquisitions, and joint ventures at both the company and project levels. He also negotiates project contracts for renewable energy projects and transactions with respect to the financing and development of satellites, data centers and other digital infrastructure assets.

461970

Practice:

  • Energy & Infrastructure
  • Renewable Energy

Tyler Conte Senior Associate

Houston; Miami

Tyler structures and negotiates a broad range of strategic transactions on behalf of sponsors, investors and lenders, including tax equity, cash equity, and debt financings, tax credit transfers, mergers and acquisitions, and joint ventures at both the company and project levels. He also negotiates project contracts for renewable energy projects and transactions with respect to the financing and development of satellites, data centers and other digital infrastructure assets.

Practice:

  • Energy & Infrastructure Sector
  • Mergers & Acquisitions
  • Private Equity
  • Infrastructure
  • Energy
  • Real Estate
  • Capital Markets

Patrick Tardivy Partner

Paris

An M&A and private equity lawyer, Patrick advises French and international companies and investors on all aspects of corporate law in the context of acquisitions, disposals, mergers, reorganizations, including business carveouts and strategic alliances.

Patrick is particularly active in the energy and infrastructure fields as well as the tech sectors, working alongside investment funds, French and foreign groups, on both domestic and cross border transactions. Patrick also has significant experience in M&A projects with a focus in the real estate sector where he acts as lead counsel on high-profile transactions.

Recognized by the major international ranking guides, Patrick is described by his clients as as "[ ] very smart and has a constructive approach and a deep knowledge of the law", "highly business-oriented with strong commercial awareness" and “always able to find solutions.”  (Chambers Global 2025 – Corporate/M&A: High-end Capability).

Patrick formerly served as co-chair of Orrick's global M&A and Private Equity practice.

Prior to joining Orrick in 2016, Patrick was a partner in a Magic Circle law firm.

Practice:

  • Energy & Infrastructure Sector
  • Mergers & Acquisitions
  • Private Equity
  • Infrastructure
  • Energy
  • Real Estate
  • Capital Markets

Patrick Tardivy Partner

Paris

An M&A and private equity lawyer, Patrick advises French and international companies and investors on all aspects of corporate law in the context of acquisitions, disposals, mergers, reorganizations, including business carveouts and strategic alliances.

Patrick is particularly active in the energy and infrastructure fields as well as the tech sectors, working alongside investment funds, French and foreign groups, on both domestic and cross border transactions. Patrick also has significant experience in M&A projects with a focus in the real estate sector where he acts as lead counsel on high-profile transactions.

Recognized by the major international ranking guides, Patrick is described by his clients as as "[ ] very smart and has a constructive approach and a deep knowledge of the law", "highly business-oriented with strong commercial awareness" and “always able to find solutions.”  (Chambers Global 2025 – Corporate/M&A: High-end Capability).

Patrick formerly served as co-chair of Orrick's global M&A and Private Equity practice.

Prior to joining Orrick in 2016, Patrick was a partner in a Magic Circle law firm.