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  • Patents
  • 3D Printing
  • Intellectual Property
  • U.S. International Trade Commission
  • Inter Partes Review (IPR)
  • Automotive Technology & Mobility

T. Vann Pearce, Jr. Partner Patents, 3D Printing

Washington, D.C.

Vann wins difficult intellectual property disputes, and helps clients use their intellectual property to build their companies.

As a litigator of patent infringement and related matters, he has obtained judgments, dismissals, and favorable outcomes in federal district courts, the Federal Circuit, the ITC, and in inter partes review proceedings. As a counselor on patent licensing and portfolio development, Vann crafts precise strategies which minimize legal threats and capitalize on emerging industry trends. Whether resolving today’s disputes or helping his clients plan for the future, Vann understands how to lead teams to successful outcomes, on budget, and in demanding circumstances.

Like his clients, Vann approaches his work with an entrepreneur’s mindset. Vann co-founded and is Co-Chair of Orrick's 3D Printing practice. Vann frequently speaks at conferences and universities around the world about the intersection of 3D printing/additive manufacturing and intellectual property law.

Vann draws upon his technical background to quickly understand complex inventions ranging from semiconductors, to imaging and displays, to chemistry. He holds a chemical engineering degree and worked in the medical device and biotech fields before law school.



  • Complex Litigation & Dispute Resolution
  • Public Policy

Julie Pearlman Associate Complex Litigation & Dispute Resolution, Public Policy

New York

Julie is an associate with the Public Policy Group in Orrick’s New York office.

Julie helps clients facing state legislative and regulatory challenges develop and implement public policy campaigns across the country. As part of these efforts, she works with company representatives and lobbyists to develop state legislative strategies on complex issues, draft and provide testimony, create advocacy materials, and educate key stakeholders.


  • Corporate

Livia Maria Pedroni Associate Corporate


Livia joined the firm in 2015 and currently is a Managing Associate at Orrick.

Livia obtained her law degree in 2014 from Bocconi University with 110/110 and was admitted to the Italian Bar in 2016.

She currently cooperates with the chair of Commercial Law (Diritto Commerciale) of Università Cattolica del Sacro Cuore of Milan, Faculty of Banking, Finance and Insurance Sciences, Prof. Michele Mozzarelli.

Livia has wide experience both on local and cross-border M&A transactions, including industrial and Private Equity deals. Livia is also experienced with venture capital deals having assisted VC funds, angel investors and founders in a wide number of deals and she is member of the Tech Group of the firm.



  • Public Finance

Helen Pennock Managing Associate Public Finance

New York

Helen Pennock is a Public Finance associate in Orrick's New York office.

Helen has participated as bond counsel, underwriter's counsel, disclosure counsel and borrower's counsel on municipal bond transactions in the affordable housing, not-for-profit, higher education, charter school and health care sectors.

Prior to joining Orrick, Helen was an Assistant Counsel at New York State Homes & Community Renewal.  Immediately after law school, she was an associate at Freshfields Bruckhaus Deringer US LLP in the structured finance group.



  • Structured Finance
  • Debt Capital Markets
  • Banking & Finance

Roberto Percoco Associate Structured Finance, Debt Capital Markets


Roberto Percoco  is an Italian qualified lawyer, Managing Associate in the Finance Team, based in the Rome Office.

He specialises in finance transactions with particular emphasis on debt capital markets, including Covered Bonds and Mini-Bonds, on which he has gained significant expertise.

In these areas, he advises major banks acting as arrangers and lead managers, and issuers.

He graduated in law at the University of Rome "Tor Vergata", with 110/110 and obtained a Master's degree in Corporate Counsel at the LUISS Business School University in Rome in 2012.

He is Italian mother tongue and fluent in English.



  • M&A and Private Equity
  • Restructuring
  • Antitrust & Competition
  • Complex Litigation & Dispute Resolution

Federico Perego Associate M&A and Private Equity, Restructuring


Federico Perego has an extensive background in corporate and commercial law and dispute resolution matters. In recent years, he has been involved in several energy projects and in corporate reorganizations, out-of-court restructurings, insolvency and liquidation matters.

Prior to joining Orrick, Federico was associate at Agnoli Bernardi and, before, at Pavia e Ansaldo.

In 2006, he obtained a LL.M. in Corporate and Commercial Law from the University of London.

Besides being admitted to the Milan Bar Association, Federico was admitted to the Roll of England and Wales as a solicitor (non practicing).



  • Technology Companies Group
  • Japan
  • Corporate
  • M&A and Private Equity
  • Blockchain and Cryptocurrency

Joseph Perkins Partner Technology Companies Group, Japan

Silicon Valley

Joseph Z. Perkins, a partner in Orrick's Silicon Valley office, is a member of the Technology Companies Group, which advises emerging companies and venture capital firms.

Joseph focuses his practice on providing private venture financing and merger and acquisition services to Internet, high tech, and clean technology companies in the United States and Japan.

Prior to receiving his Juris Doctor from Harvard Law School, Joseph spent four years as an officer of a company that provides language and travel services to Japanese travelers.



  • Restructuring

Monica Perrigino Managing Associate Restructuring

New York

Monica Perrigino, a Managing Associate in Orrick’s New York office, is a member of the Restructuring Group.  Monica represents a variety of financial institution creditors in restructuring-related matters.

Monica Perrigino was a summer associate in the firm's New York office in 2014.  From 2018 to 2019, she served as a law clerk to the Honorable Sean H. Lane in the United States Bankruptcy Court for the Southern District of New York.


  • Real Estate
  • Real Estate Finance
  • Real Estate Investment Funds

Randolph Perry Partner Real Estate, Real Estate Finance

Los Angeles

Randolph Perry's practice focuses on real property, distressed assets and secured loan acquisitions and dispositions, joint ventures, and hospitality transactions.

Randy has assisted opportunity funds, operators/developers, pension funds, pension fund advisors, investment banks, financial institutions, non-bank financial institutions and private equity funds in the acquisition and disposition of real property, sale of distressed loan portfolios, and mezzanine and permanent financings.



  • Employment Law & Litigation
  • Wage and Hour
  • Class Action Defense
  • Discrimination, Harassment & Retaliation
  • Pay Equity

Jessica Perry Partner Employment Law & Litigation, Wage and Hour

Silicon Valley

Jessica R. Perry, Managing Partner, Practice and Sector Alignment, is a member of Orrick’s senior leadership team. She also leads Orrick’s Litigation practices worldwide.  As an employment litigator, she represents tech, retail and financial industry leaders in their most significant class, collective, representative and multi-plaintiff actions.

Jessica defends employers from discrimination and harassment claims on the basis of gender, race, religion, disability, age and other protected categories. She recently defeated class certification in cases alleging discrimination against women in technical roles for Microsoft and Twitter, earning her The American Lawyer’s "Litigator of the Week” award. She also won a complete defense verdict for Kleiner Perkins in the highly publicized gender discrimination and retaliation case Pao v. Kleiner Perkins, which the Daily Journal named the year’s ‘Top Verdict.’ Her trial victories also include winning defense judgments in cases involving claims of religious discrimination, retaliation and wrongful termination. Jessica also specializes in pay equity matters, including in designing analyses and advising on compliance and risk mitigation. Clients interviewed by Chambers note, “She's very thorough and knows the details and procedure, without allowing anything to fall through the cracks."

Jessica has a winning record in beating back class certification in high stakes wage-and-hour actions in federal and state court, including those brought under the Private Attorney General Act. Having led over 150 high-stakes wage-and-hour class action matters, Jessica has broad experience on virtually every theory of relief. She also offers strategic guidance to help businesses avoid wage-and-hour litigation, particularly companies in the gig economy industry which can be significantly impacted by such matters.

In addition to litigation and counseling, Jessica has successfully guided clients through investigations and audits by the Department of Labor, California Division of Labor Standards Enforcement and California Employment Development Department, and helped develop compensation policies and measures to reduce potential exposure.

Jessica is also an expert in generational workplace issues and frequently speaks on employment engagement in a multi-generational workforce.



  • Technology Companies Group
  • M&A and Private Equity
  • Corporate

Christopher Perry Managing Associate Technology Companies Group, M&A and Private Equity


Chris is an associate in Orrick's Technology Companies Group. He advises on a wide variety of corporate law issues affecting early to late stage technology companies and those who invest in them, with a particular emphasis on venture capital, private equity, mergers and acquisitions.

Prior to joining Orrick, Chris trained and worked at a major international law firm where he advised on several large M&A transactions as well as a number of private equity and venture capital investments.


  • Employment Law & Litigation

Mandy Perry Partner Employment Law & Litigation


Mandy Perry, a partner in the London office, is a member of the Employment Group. Mandy’s practice includes acting in high value litigation disputes in the High Court and Employment Tribunal where she has gained particular expertise in claims involving whistleblowing, discrimination and post termination restrictions.

Mandy specialises in all aspects of contentious and non-contentious employment law and advises clients across diverse sectors with particular emphasis on corporate and technology clients.

Mandy advises on the strategy and handling of redundancies, wrongful and unfair dismissals, TUPE, cross-border disputes, financial services remuneration issues, data protection and a full spectrum of employment-related legal issues.

Legal 500 describe Mandy as "a joy to work with, very experienced and knowledgeable". She is an accomplished speaker and regularly provides client training on legal updates, diversity matters and presents on all aspects of the employment relationship.