People

Jacob M. Heath Partner

Silicon Valley

With a focus on the intersection of cybersecurity, privacy, online safety and intellectual property, Jake is a trusted advisor to one of the largest technology companies in the world and a major cloud-based communication product and service provider. His recent experience includes representing a major social media platform in litigation related to Section 230 of the Communications Decency Act.

Jake is adept at helping clients develop cutting-edge legal strategies and connect with judges and juries to support their online services, platforms or products while threading the rapidly evolving regulatory landscape. As he sees it, every battle—whether it involves cybercrime, fraud, brand violations, IP infringement, trade secrets or a cybersecurity breach—is an opportunity to help clients problem-solve and future-proof their business. Jake brings a breadth of experience defending clients in a wide range of matters, including commercial and tech transaction litigation, in state and federal court and regulatory investigations.

Mike Heath Partner

Los Angeles; Santa Monica

Mike has spent over 15 years helping founders and boards navigate the full company lifecycle—from formation and fundraising to scaling, acquisitions, and IPOs. He also serves as outside general counsel, advising on the legal and strategic challenges that come with growth.

Mike is all about efficiency, assembling legal teams that scale with his clients—from an early-stage founder sketching an idea on a napkin to executives leading multibillion-dollar companies through major transactions. His approach is rooted in trust and candid advice, particularly when navigating the complex and uncertain situations that inevitably arise in high-growth companies.

Leveraging Orrick’s sector-focused approach and legal innovation tools, Mike advises startups and high-growth companies on financing rounds, IPOs, and M&A deals. He also works closely with top venture capital and growth equity funds, guiding them through investments.

Prior to joining Orrick, Mike was a partner and co-founder of Gunderson Dettmer’s Los Angeles office.

Recognized as a “Next Generation Partner” by The Legal 500, Mike’s clients praise him as “incredibly knowledgeable, responsive, and always helpful,” with one calling him their “favorite external counsel.” Super Lawyers also named him a Rising Star in 2022 and 2023.

Mike earned both his law degree and bachelor’s degree at UC Berkeley, just a short walk from each other down Bancroft Avenue. A lifelong Cal Bears fan, he still holds out hope for a Rose Bowl appearance—ACC realignment and all.

Daniel Healow Senior Associate

Silicon Valley

Daniel has experience working with clients of all sizes with varying industry and regulatory footprints, from startups to mature technology companies to large financial institutions, in various transactional settings, such as mergers and acquisitions, carve-outs, service provider arrangements, development arrangements, strategic partnerships and commercial contracts. In addition to standalone transactions, Daniel provides ongoing client support concerning post-transaction business integration, IP portfolio management, artificial intelligence tooling usage, open source software usage, compliance with privacy laws, internal and external-facing policy management and data management strategy.

Prior to joining Orrick, Daniel was an Associate in the IP and Technology Transactions Group at Skadden. Prior to law school, he was part of the Legal Online Operations team at Google where he managed and developed policies to address government requests for user data.

Winnie Tsien Of Counsel

Los Angeles

Winnie has addressed the Bond Attorneys' Workshop for the National Association of Bond Lawyers relating to various topics, including arbitrage and rebate, refundings, working capital financings, and 501c3 financings. Winnie earned a J.D. in 1994 from the University of California, Davis School of the Law, where she was elected to the Order of the Coif and was a member of Law Review. She received her B.A. from Pitzer College.

Robert Shwarts Partner

San Francisco

He represents plaintiffs and defendants in complex trade secret misappropriation cases and has conducted numerous TRO and preliminary injunction hearings in aid of these cases. His practice also includes counseling relating to trade secrets misappropriation and non-compete/non-solicitation agreements.

Rob has broad experience in commercial litigation, having litigated claims of securities fraud, lender liability, breach of contract, breach of fiduciary duty, breach of warranties, claims arising from securitization transactions and other business fraud.

Rob's experience in employment-related litigation includes defending claims of discrimination, wrongful discharge, retaliation, sexual harassment and breach of contract. His practice also includes counseling relating to trade secret misappropriation and non-compete/non-solicitation agreements.

U.S. and international clients with significant California presence turn to Rob to represent them in complex matters, including numerous financial services companies. He handles both jury and bench trials, as well as AAA, JAMS and FINRA (formerly NASD and NYSE) arbitration hearings.

Rob serves as the chair of the Firm’s Practice Management Committee, and is a member of the firm’s Risk Management Committee. Rob previously served as head of the San Francisco office. Rob contributes pro bono hours to the Humane Society and Point Blue Conservation Science each year.

Sundeep Kapur Partner

Washington, D.C.

Sundeep is also a leading advisor in the rapidly evolving advertising ecosystem and possesses an in-depth technical and legal understanding of adtech across all channels (e.g., connected TV, linear TV, over-the-top media, desktop, mobile web, mobile app). He participates in adtech working groups and is a key contributor to the development of industry-wide privacy compliance solutions. He advises on compliance with self-regulatory regimes developed by the Network Advertising Initiative (NAI), the Interactive Advertising Bureau (IAB), and the Digital Advertising Alliance (DAA). The IAB named him Outstanding Contributor to Legal Affairs in 2024 for his significant impact on the adtech ecosystem through his work on such industry-wide initiatives.

Sundeep is accredited by the International Association of Privacy Professionals (IAPP) as a Certified Information Privacy Professional in the United States (CIPP/US). He is also a member of Law360's 2025 Cybersecurity & Privacy Editorial Advisory Board.

B. J. Rosen Partner

New York

B. J. is also the Senior Outside Legal Advisor to The Innocence Project, an organization dedicated to exonerating wrongly-convicted prisoners through DNA testing and reforming the criminal justice system to prevent future injustice.

Rebecca Harlow Partner

San Francisco

Rebecca’s practice includes all aspects of class action and other civil litigation in areas including privacy and data security breach litigation and arbitration and insurance litigation. She has represented multiple companies in class action litigation involving claims by consumers, employees, and institutions relating to security, privacy, and other issues. She also advises clients facing insurance coverage disputes and arbitration of contractual disputes. She has defended litigation arising out of data breaches involving claims by consumers and financial institutions and class actions bringing wiretapping and other claims against companies relating to the use of online technologies and tools like cookies, pixels, and session replay software.

Rebecca has assisted multiple clients across several industries in seeking, obtaining, and disputing the denial of insurance coverage. Throughout the COVID-19 pandemic, she has advised clients on insurance, contracting, and other unique issues that have arisen. Recently, Rebecca served as the senior associate in a fraud trial that was tried in-person during the height of the Omicron variant and settled after a week of trial. Rebecca’s pro bono practice focuses on immigration and civil rights issues.

Prior to joining Orrick, Rebecca was a litigation associate in the San Francisco office of another international law firm. She previously served as a pro bono fellow at Greater Boston Legal Services representing low-income clients in disputes over state cash and food assistance benefits.

John Wolfe Partner

Seattle

John is consistently recognized in The Best Lawyers in America and recommended by The Legal 500 United States as a white collar criminal defense lawyer. John relies upon a multi-disciplinary crisis management strategy to assist clients and address both legal and reputational risks.

John has extensive experience representing clients in federal and state criminal and civil investigations, including state attorney general investigations, related to alleged health care fraud and standards of care violations resulting in death, consumer protection violations, public corruption and campaign finance violations, environmental violations (both land-based and maritime), including catastrophic industrial accident response and investigations, cybersecurity investigations and securities and tax fraud, including money laundering. John is an accomplished and seasoned trial lawyer who has represented public and private clients in more than 100 jury trials, and appeared in state and federal proceedings throughout the Pacific Northwest, as well as California, Florida, Montana, New York, and Wyoming.

Honors:

In 2004, John chaired the Magistrate Selection Committee for the Federal District Court in the Western District of Washington. He has also served on several Merit Selection panels identifying candidates for appointment to the federal bench in the Western District of Washington. He is currently co-chair of the Federal Appointments Committee for the Federal Bar Association and has served as a Ninth Circuit Representative. He was once appointed to serve as a Special Master in a matter pending before the Federal District Court in the Western District of Washington to investigate issues related to a multi-party joint defense agreement.

Kristopher R. Wood Senior Associate

Orange County

Mr. Wood's experience spans multiple industries, practice areas, and jurisdictions. Through his work, Mr. Wood has developed a strong sense of the importance of each client's unique industry and circumstances to the matters he undertakes, and he thoroughly enjoys each chance to learn about his clients and their work. Although Mr. Wood's focus is on trade secret misappropriation and business torts, he prizes variety in his practice and relishes the chance to take on new challenges in different areas of law.

Mr. Wood is known for developing a deep understanding of the facts and law in each case. In most of his cases, he serves as the point person for fact discovery, and through this experience he has created highly efficient and effective methods of identifying, tracking, organizing and synthesizing key facts in even the most complex matters. He excels at identifying patters and drawing meaning from large data sets, and his methods have led to breakthroughs in his cases on more than on occasion.

Mr. Wood's interest in efficiency extends beyond the specific matters he works on. Mr. Wood enjoys identifying tasks in his practice that can be automated and developing tools to do so. This redounds to his clients' benefit--in one case Mr. Wood's automation tool led to nearly a 50% reduction in the total time required for a given matter.

Beyond his paid work, Mr. Wood is also an active participant in pro bono activities and organizations. Mr. Wood serves as a member of the Board of Directors of the Public Law Center of Orange County, and previously served two terms as Co-Chair of the PLC Advocates. He also regularly takes on pro bono clients, primarily representing clients in removal proceedings before the immigration courts and the Ninth Circuit Court of Appeals.

Jennifer Keighley Partner

New York

Jennifer has co-authored numerous briefs and dispositive motions in federal and state courts of appeals and trial courts, and at both the certiorari and merits stage in the U.S. Supreme Court. Her experience covers a wide range of substantive areas, including constitutional law and statutory interpretation, labor and employment, intellectual property, healthcare law, privacy law, class action defense, securities litigation, and complex commercial litigation. She has deep expertise in appeals and critical motions in financial services litigation, including representing financial institutions in major RMBS cases and in putative and certified class actions, and she is currently representing Goldman Sachs, JPMorgan, and other underwriters of initial and secondary offerings in multiple securities class actions. Jennifer also maintains an active pro bono practice focusing on the areas of immigrant and women’s rights.

While at Orrick, Jennifer has argued and won two appeals. She argued and won an appeal on behalf of OpenTV raising issues of contract interpretation in the California Court of Appeal. She also argued and won an appeal on behalf of an immigration client seeking relief under the Convention Against Torture in the U.S. Court of Appeals for the Ninth Circuit.

Prior to joining Orrick, Jennifer was a Staff Attorney at a national nonprofit and an associate at a boutique firm. In her prior roles, she participated in all aspects of litigation, arguing and briefing dispositive motions, examining multiple witnesses at trial, and taking depositions of both fact and expert witnesses. Jennifer graduated from Yale Law School, where she was an Editor on the Yale Law Journal. Immediately following law school, she served as a law clerk to Judge Kim McLane Wardlaw of the United States Court of Appeals for the Ninth Circuit.

Roberta Dimaggio Managing Associate

Milano

She focuses her practice on private equity transactions and corporate matters, advising clients on national and cross-border mergers and acquisitions, corporate governance, and commercial law issues.

Roberta's expertise extends to assisting both Italian and international companies on M&A transactions for domestic and international growth as well as private equity funds on their investments. She also provides counsel to Italian families in strategic operations involving private equity funds and transactions aimed at expanding their businesses. In addition to her transactional work, Roberta offers general corporate expertise, guiding clients through various corporate governance and commercial law matters.

Roberta has advised on acquisitions in the healthcare sector, including the purchase of medical centers and diagnostic facilities, as well as transactions in the industrial sector. Her experience includes assisting clients in the acquisition of companies specializing in energy efficiency and decarbonization solutions, as well as advising on the sale and purchase of manufacturing and industrial assets.