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Sarah Jane Ungeheuer Managing Associate

New York

Prior to joining Orrick, Sarah worked as a pro bono fellow at New York Legal Assistance Group. At Orrick, Sarah has broad experience representing financial institutions in claims brought by investors and trustees and extensive trial experience advising clients in all stages of litigation.  Sarah has supported trial teams in various matters through the discovery process, expert witness preparation, summary judgment motions, extensive trial preparation and trial.  Sarah also continues to contribute to the pro bono practice at Orrick and is a member of New York Legal Assistance Group's Pro Bono Associate Advisory Board.

382113

Practice:

  • Employment Law & Litigation

Marianna Urban Senior Associate

Düsseldorf

She advises companies in all stages of growth, from pre-IPO start-ups to unicorns and investors to international corporations on a wide range of labor law matters. In addition to day-to-day employment law advice, this includes assisting companies with complex transactions, restructurings, and redundancies.

Her practice also focuses on employment law issues, such as employee leasing, service contracts for the management board or advice in the conclusion and negotiation of shop agreements.

Most recently, she has advised leading global technology companies such as Pinterest and Snap on various labor law issues and has been an important contact for many young technology companies since their foundation.

Marianna has been with Orrick since 2019.

287854

Practice:

  • Technology & Innovation Sector
  • Intellectual Property
  • Trademark, Copyright & Media
  • Trade Secrets Litigation
  • Patents
  • Patent & Intellectual Property Rights Appeals

Robert L. Uriarte Partner

Silicon Valley; Los Angeles

Robert is a technology litigator and trial lawyer focused on software, security technology, and emerging internet law and digital crimes issues.   Robert has helped establish landmark precedent under the Copyright Act, the Computer Fraud and Abuse Act,  California Penal Code 502, and Digital Millennium Copyright Act, and he has successfully tried multiple cases to verdict, including under the Patent Act.  In addition to litigation work, Robert also counsels companies ranging from market leaders to start-ups on issues related to intellectual property, security, and incident response.  Robert brings a creative, business-oriented approach to helping clients develop, acquire, and protect their most important assets. 

Robert is committed to improving diversity in the legal profession. He co-chaired Orrick's Silicon Valley Diversity Committee for many years and is one of the firm-wide facilitators for Orrick’s Latinx Inclusion Network.  Robert is also committed to pro bono work.  He received Orrick's Pro Bono Award in 2019 and the Legal Aid Association of California's 2015 Family Law Pro Bono Award.  Robert currently serves as a member the board of directors for the San Mateo County Legal Aid Society. 

Robert served as a law clerk to U.S. District Judge Oliver W. Wanger in the Eastern District of California prior to commencing private practice.

341263

Practice:

  • Employment Law & Litigation
  • Discrimination, Harassment & Retaliation

Annie Prasad Vadillo Senior Associate

Silicon Valley

As a trial lawyer, trusted counselor, and advocate, Annie finds creative solutions - whether that means tackling challenging issues with current employees, resolving a matter pre-litigation, or winning decisively at trial.  Having amassed significant courtroom and trial experience, she knows how to deliver the best results for her client. She has won trials and arbitrations and defended several companies against high-profile, highly publicized claims.  Representative clients include Apple, Carta, Lyft, Williams-Sonoma, Inc., Unity Technologies, Instabase, TaskRabbit, and Next Insurance. 

Annie also has expertise in gig economy and independent contractor classification issues, workplace best practices and policies, defending companies in government audits including unemployment insurance audits, investigating internal employee complaints, and counseling on issues throughout the entire employee life cycle. 

When she is not in her office in Menlo Park, Annie chases after her two dogs Clifford and Jude and her toddler.  

472610

Practice:

  • Intellectual Property

Johnathan Vaknin Associate

Los Angeles

Johnathan is an associate in Orrick's Intellectual Property group. His practice focuses on high-stakes intellectual property litigation, with an emphasis on copyright and trademark disputes.

Prior to joining Orrick, Johnathan was a litigation associate at another global law firm, where he represented clients in matters across a range of industries and subject areas. 

Johnathan is a graduate of UC Berkeley School of Law. During law school, he was a Notes Editor for the California Law Review and volunteered with the Artistic Freedom Initiative, a non-profit organization that provides pro bono legal assistance to international artists at risk of persecution.

Before entering the legal profession, Johnathan earned his Ph.D. in Comparative Literature from UC Berkeley and subsequently taught literature at the University of Arizona. His background in the humanities informs his approach to analyzing complex materials and developing clear arguments. 

180903

Practice:

  • Real Estate
  • Renewable Energy
  • Energy & Infrastructure
  • Mergers & Acquisitions

Lisa van Velsor Counsel

San Francisco

Lisa represents clients in a variety of energy transactions, including project development, mergers, acquisitions and financings. She has a particular focus on real property matters, including negotiating site control documents, title insurance policies and surveys, and coordinating a wide variety of title curative work.

Lisa's background includes commercial real estate work for institutional clients and high net worth individuals, with extensive experience representing clients on acquisitions, dispositions, financing, and joint ventures.

320059

Practice:

  • Technology & Innovation Sector
  • International Arbitration & Dispute Resolution
  • Intellectual Property
  • Trade Secrets Litigation

Amy Van Zant Partner

Silicon Valley

For her litigation practice, Amy’s ability to distill the most complicated technology across an array of fields, including telecommunications, semiconductor manufacturing, renewable energy, cloud computing, and big data, into relatable, every day concepts that has made her successful in persuading judges and juries alike. She has led trial teams, litigated, and tried cases in state court in California, numerous District Courts, the International Trade Commission, and has briefed appeals before the 9th Circuit, the Federal Circuit, the Supreme Court of California, and the United States Supreme Court. 

Whether litigating patent, trade secret, or IP contract disputes, Amy strives to put herself in her client’s shoes to ensure personalized results tailored to each client’s business objectives. As SAP’s General Counsel Landon Edmond commented to Acritas, Amy “has acquired a great knowledge of our business, and therefore you know you can trust her in a wide variety of topics and to get the right colleagues within her firm involved across the globe.”

Amy also provides comprehensive IP counseling on issues including trade secrets protection, employee departure investigations, freedom to operate analysis, licensing strategies, data privacy protection, and regulatory compliance. She has also conducted comprehensive patent portfolio reviews and assisted with IP corporate transactions.

In addition to her IP work, Amy devotes significant time to her pro bono work. For more than a decade, she has assisted domestic violence victims, as well as led Orrick’s Bay Area summer program that enables law clerks to be certified to argue in Family Court to obtain Temporary Restraining Orders for domestic violence clients.

459519

Practice:

  • Renewable Energy
  • Oil & Gas
  • Mergers & Acquisitions
  • Energy & Infrastructure

Michael Vance Managing Associate

Houston

Michael represents clients in complex business transactions, including mergers and acquisitions, joint ventures, private equity investments, project development, commercial agreements and general corporate matters primarily in the oil and gas and renewable energy industries.

391594

Practice:

  • Technology & Innovation Sector
  • Capital Markets
  • Corporate Governance
  • Technology Companies Group
  • Life Sciences & HealthTech
  • Mergers & Acquisitions
  • Special Purpose Acquisition Companies (SPACs)

Albert Vanderlaan Partner

Boston

Albert is involved in a broad range of corporate legal engagements for high growth technology companies, including IPOs, follow-on public offerings, private and public company securities law compliance matters, public company disclosure obligations, venture financings, mergers and acquisitions, de-SPAC transactions and SPAC IPOs. He also regularly advises public and private companies and their boards of directors on corporate governance issues.

Albert's clients include public and private companies in technology, energy, automotive, Internet related industries, real estate, finance and the life sciences (including, among others, immuno-oncology, gene therapy, restorative cell therapy and medical device companies). He also represents underwriters in initial public offerings, follow-on offerings and PIPE offerings and venture capital firms in a variety of investment transactions.

Albert was named to the Deal’s Top Rising Stars 2021 list, which recognizes top new partners at U.S. law firms who are “doing spectacular work in the field of deal-making and who have continued to progress in their career despite the obstacles put in front of them.”

382930

Practice:

  • Technology & Innovation Sector
  • Technology Companies Group

Rebecca Vastola Managing Associate

San Francisco

Rebecca is an Associate in the San Francisco office of Orrick’s Technology Companies Group. She advises her clients on key legal issues and obstacles, including negotiating investment terms and structuring deals, maintaining good corporate governance practices, navigating employee and contractor equity, and preparing for exit.

454788

Practice:

  • Energy & Infrastructure

Calvin Vaughan Associate

Washington, D.C.

His practice focuses on transactions in the energy and infrastructure sectors.

454104

Practice:

  • Energy & Infrastructure

Andres Vega Managing Associate

Washington, D.C.

He regularly represents project developers and investors in energy project finance transactions, including tax equity and debt financing, M&A, joint ventures, project development and a broad range of corporate matters. His prior experience includes international and multijurisdictional financing and development of energy projects in Mexico and across Africa, including Equatorial Guinea, South Africa, Nigeria, and Egypt.