People

Jake Routhier Corporate Innovation Attorney

San Francisco

Jake also represents high growth technology companies in several areas, including corporate and securities law, formation, and venture capital financings.
Jake received his JD/MBA from the University of Pennsylvania Law School and the Wharton School of Business in 2018, where he received the Academic Excellence Fellowship. He is also a 2010 graduate of Dartmouth College and prior to attending law school worked at education startups in New York.

Miranda Rowley Managing Associate

San Francisco

Miranda has experience defending clients in all stages of litigation on a broad range of employment law issues. She has significant experience regarding independent contractor misclassification matters, including both single plaintiff and class action litigation involving wage and hour claims, and representative actions under California's Private Attorneys General Act. Miranda also has particular expertise in defending clients in whistleblower retaliation cases.

In addition to her litigation practice, Miranda also counsels clients on California's complex employment laws.

Ari Roytenberg Senior Associate

New York

Ari's experience includes supervising cases through all phases of litigation, from pre-litigation strategy through appeal. Most recently, Ari served as lead counsel to an aerospace defense company in litigation that began in New York State court and continued through a six-month trial in bankruptcy court in connection with a $1.3 billion restructuring transaction. His courtroom advocacy, briefing strategies, and fact and expert depositions have helped secure favorable outcomes to a number of clients involved in high-stakes disputes.

Before joining Orrick, Ari was an associate with Quinn Emanuel Urquhart & Sullivan LLP and served as a law clerk to Judge Richard M. Berman on the United States District Court for the Southern District of New York.

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 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 and anti-psychotic drugs. She has also represented an innovator in some of the first cases under the BPCIA, including the first involving an antibody. 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” and “an incredibly smart lawyer.” Benchmark Litigation named her one of the “Top 250 Women in Litigation” for the last seven years and a litigation star in intellectual property in New York. Irena was also named to the Crain’s New York Business 2021 list of Notable Women in Law.

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 and Pink Sheet.

Daniel A. Rubens Partner

New York

Danny's practice focuses on appellate litigation. He has led the drafting on dozens of appellate briefs, and regularly argues appeals in state and federal courts. Danny has extensive trial litigation experience as well, with an emphasis on dispositive motions, preserving appellate issues, and developing creative legal strategies.

Danny’s work has covered a wide range of subject areas, including securities, bankruptcy, intellectual property, arbitration, class actions, and criminal law. He has a deep understanding of appeals and critical motions in financial services litigation, and in recent years has played a key role in representing financial institutions in major RMBS cases brought by trustees, investors, and monoline insurers. His financial services clients include Credit Suisse, Goldman Sachs, Mr. Cooper, and Ocwen. He also represents leading technology companies in precedent-setting cases involving antitrust law and ballot initiatives, as well as other complex commercial litigation.  In addition, Danny is an experienced bankruptcy litigator, having represented various debtors and creditors in fraudulent transfer cases and other contested insolvency-related matters involving U.S. and foreign law.

Danny is a member of the Second Circuit's pro bono panel and maintains an active pro bono practice focusing on criminal, immigration, racial justice, and LGBTQ+ rights matters in the Supreme Court and other appellate courts. He was recently recognized by the National LGBTQ+ Bar Association as a “Best LGBTQ+ Lawyer Under 40,” by the New York Law Journal as a Rising Star, and by LawDragon in its inaugural 500 X – The Next Generation listing.  As part of his commitment to diversity, equity, and inclusion, Danny serves as a mentor for The Appellate Project, an organization focused on empowering law students of color to thrive in the appellate field. He has also served as an Orrick ambassador for the Move The Needle Fund, a collaborative effort designed by Diversity Lab to create a more diverse and inclusive legal profession.

Before joining Orrick, Danny served as a law clerk to U.S. Supreme Court Justice Ruth Bader Ginsburg, Judge Robert A. Katzmann of the U.S. Court of Appeals for the Second Circuit, and Judge Jed S. Rakoff of the U.S. District Court for the Southern District of New York. Following his clerkships, he was selected to represent the American Inns of Court as a Temple Bar Scholar in London.

Dr. Johannes Rüberg, EMBA Partner

Monaco

This includes venture and growth financings in all stages and general corporate counseling. His practice further focuses on advising strategic and financial investors on mergers and acquisitions.

Germany's leading legal directory JUVE lists Johannes as frequently recommended for both corporate law and venture capital, including a competitor's testimonial "very good expertise, pleasant cooperation" (2024/2025). Legal 500 Deutschland lists Johannes as a "recommended lawyer" for venture capital (2024), including the testimonials "very supportive and a pleasure to work with", "extremely conscientious", and "quick response time" in its 2022 edition. Since 2021, he has been recognized by Germany's leading business daily Handelsblatt as a "Ones to Watch" lawyer for corporate law.

In addition to his work as a lawyer, Johannes has completed the joint Executive MBA program by U.S.-based Kellogg University and WHU – Otto Beisheim School of Management, Germany’s leading startup university.

Aaron M. Rubin Partner

Orange County

An accomplished litigator, Aaron advises leading investment banks, financial institutions, mortgage servicers, non-bank lenders, and alternative asset managers on the unique issues impacting the finance sector, from major commercial disputes to securities litigation and enforcement actions. Leveraging his dispute resolution expereince, Aaron serves as a trusted partner to clients, advising on best practices for mitigating risk long before there is the threat of litigation.

In 2018, Aaron moved to the firm’s Orange County office from New York. The move served his New York-based traditional financial institution clients needing counsel on the West Coast, while also expanding his practice.

David M. Ruff Partner

New York

David advises private equity funds, their portfolio companies and a broad range of public and private technology, energy and life sciences companies in domestic and cross-border M&A, minority and majority investments, joint ventures and other complex transactions.

Paul F. Rugani Partner

Orange County; New York; Seattle

Legal 500 touts Paul as a recommended attorney for Securities Litigation, observing that he is “among the most creative and strategic lawyers” who always has “an eye on the end game.”  Paul achieved American Lawyer Litigator of the Week recognition as part of a team that achieved a ground-breaking New York Court of Appeals victory that substantially reduced financial exposure in RMBS repurchase litigation.

Leader of Orrick's Securities Litigation practice and deputy leader of the Firm's Financial Services Litigation practice, Paul has extensive experience representing clients in securities class actions, shareholder derivative lawsuits, commercial contractual disputes and other complex litigation matters at both the trial and appellate levels, as well as in connection with internal, government and regulatory investigations. Paul also counsels domestic and foreign accounting firms on matters related to state CPA licensing and state board regulation.

Michael Ruiz Partner

Silicon Valley; Seattle

Michael advises his clients on a broad range of legal needs, including corporate formation and structure, venture capital financings, board and stockholder relationships and exit transactions. His current and former clients are concentrated in interactive media industries including game development, Esports, AR/VR tech, 3D animation, and artificial intelligence. Michael also advises companies in the cleantech and life sciences sectors.

His favorite video game is Final Fantasy (VII), favorite board game is Twilight Imperium (IV) and favorite science fiction book is Ender’s Game.

Zoe Russell Managing Associate

Los Angeles

Zoe works on diverse employment litigation matters. She is also active in pro bono matters.

Zoe received her J.D. from the University of California, Los Angeles School of Law, where she simultaneously earned her M.A. in African American Studies. While in law school, she served as the Co-Chair for the Black Law Students Association and the Director of Affordable Housing for the UCLA Graduate Students Association.

Diana M. Rutowski Partner

Silicon Valley

As a seasoned IP litigator and counselor, Diana’s practice has run the gamut from high stakes trials, to take-down and anti-counterfeiting campaigns, to employee departure and trade secret investigations. She represents clients in District and state courts and before administrative bodies including the ITC and the USPTO. For example, Diana tried and won a complex case in which the other side sought to extend the monopoly of an expired utility patent by claiming trade dress rights in a technical product feature. Drawing upon experience handling both complex patent and trademark matters, her team successfully argued that the intersection of patent and trademark policy prevented the other side from continuing its monopoly, clearing the way for her client to enter the market. With Diana at their side, companies can rest assured that their essential assets are protected, from their core technologies, to assets including their company name, logo, and website.

While at Orrick, Diana was seconded to the City and County of San Francisco, where she had the privilege to serve as an Assistant District Attorney, and first-chair several trials. She was also seconded to Salesforce, where she learned first-hand that the law comprises just one component of a company’s overall business strategy.

Diana is also passionate about her pro bono work. For example, she represented two detainees in Guantanamo in connection with their petitions for a writ of habeas corpus, and she is currently working with the Lawyers’ Committee for Civil Rights of the San Francisco Bay Area. Before joining the firm, Diana worked for the Legal Aid of Cambodia where she assisted with the prosecution of former Khmer Rouge officials and represented individuals who sought to reclaim land rights.

Diana is a member of the International Trademark Association, of ChIPs: Advancing Women in IP and of the Harvard Club of San Francisco.