Jeff Klein, a partner in Goodwin's Technology Companies Group and its Technology Transactions Practice, helps companies in all areas of the corporate life cycle. He concentrates on pre-incorporation planning, formation issues (including founder equity issues), financing transactions, commercial agreements, revenue transactions, licensing, general corporate representation and counseling, corporate governance, joint ventures and mergers and acquisitions. Mr. Klein is a key contributor to Goodwin’s Founders Workbench, an online resource for start-ups, emerging companies and the entrepreneurial community.

Learn about Mr. Klein’s mantras, childhood aspirations and Saturday routine here.

Areas of Practice
Domaines D’Expertise





Mr. Klein works with a broad base of start-up, venture-backed and growth companies in a variety of industries, and focuses in advertising technology, digital media, entertainment, enterprise software, big data, Internet, mobile, e-commerce, financial services technology and healthcare technology.

Representative Matters



  • Liverail, an online video advertising technology company, in its sale to Facebook
  • Stylecaster, an online lifestyle publisher, in its sale to SheKnows Media Holdings
  • Tagman, a tag management and attribution company, in its sale to Ensighten
  • Nomi, a customer data and marketing company, in its acquisition of Media Armor
  • Gibson Guitar Brands, a leader in musical instruments, consumer electronics and audio, in its acquisition of the audio and home entertainment business of Woox Innovations (owned by Royal Philips, N.V.)
  • Everyscreen Media, a mobile marketing company, in its sale to Media6Degrees
  • M5 Networks, a hosted unified communications company, in its sale to ShoreTel (NASDAQ: SHOR)
  • Nomi, a customer data and marketing company, in its sale to Brickstream
  • Interactions, a customer care systems company, in its acquisition of the Watson platform from AT&T
Private Financings
  • Nomi, a customer data and marketing company, on all financing transactions from investors such as Accel Partners, First Round Capital, Greycroft Partners and Forerunner Ventures
  • Orchard Platform, an analytics and investment platform focused on the online direct lending market, in its financing transaction with Spark Capital and Canaan Partners
  • Adcade, a digital advertising technology company, in its financing transaction with Polaris Venture Partners and FF Ventures
  • Local Yokel Media, a hyperlocal digital ad platform company, in its financing transaction with Connecticut Innovations and Gold Ridge Asset Management
  • HookLogic, a digital advertising platform company, on financing transactions with Bain Capital Ventures and Intel Capital
  • Swarm Mobile, a shopper analytics and omni-channel marketing company, in its financing transaction with Icon Venture Partners and Abundance Partners
Commercial Transactions
  • Gibson Brands, a leader in musical instruments, consumer electronics and audio, in connection with an endorsement deal with Usain Bolt, a six-time Track & Field Olympic Gold Medalist, for “Trainer by Gibson”, an innovative headphones product.
  • Paperless Post, an online stationery and invitations platform company, in connection with a strategic partnership transaction with Yahoo
  • Machine Zone, a leader in free-to-play mobile technology platform and core MMO games, in connection with a strategic marketing and endorsement agreement with Kate Upton for “Game of War – Fire Age”
  • StellaService, a big data company that measures and benchmarks the customer service performance of online businesses, in its strategic data partnership deal with Google
  • Invaluable, Inc., a leading online live auction marketplace, in its strategic partnership deal with eBay
  • iLevel Solutions, a SaaS portfolio monitoring software solution, on various commercial transactions involving leading private equity and other financial services institutions
  • Predilytics, an advanced healthcare predictive analytic platform, on various commercial transactions involving leading healthcare companies
  • Megaphone Labs, an interactive television and interactive out-of-home signage company, in negotiating various commercial agreements with clients for product deployments on network television and in stadiums and arenas
  • The Milner Foundation, a charitable organization founded by entrepreneur and venture capitalist Yuri Milner, in connection with the production of the Breakthrough Prize Awards television show with Don Mischer Productions and the distribution of such show on The Discovery Channel
  • Driven Apps, a New York-based app publisher which designs and develops sports training aids, in connection with a deal to develop/publish “Ernie Els Driven,” a golf training app featuring Ernie Els
  • Asphalt Yacht Club, a leading skateboard apparel company, in connection with celebrity endorsement deals with top professional skateboarders, including Nyjah Huston, Stevie Williams and Riley Hawk
  • TrukFit, a leading urban street apparel company, in connection with celebrity endorsement deals with Lil Wayne, Austin Mahone, Chanel West Coast and Lil Bow Wow
  • Fanclub, a celebrity and fan engagement platform, in connection with negotiating a commercial deal with Lil Wayne
  • StyleCaster, a women’s lifestyle media company, in connection with negotiating talent deals with Chrissy Teigen and Cynthia Rowley and an original online video content development and production deal with GroupM
  • Café Mom, the #1 site on the Internet for moms, in connection with launching a channel as part of YouTube's new original channels initiative, and, to extend its offering beyond community and content and into commerce
  • Library Ideas, a new media company focused on public libraries in connection with launching online music, casual games and movie services, including negotiating license agreements with Sony Music Entertainment, Paramount Pictures and Big Fish Games
  • Tempo Networks, a Caribbean television channel, in connection with various television production, broadcast and distribution transactions
  • Adelphic Mobile, a mobile demand side platform, in connection with its strategic commercial deal with VivaKi
Professional Activities

Mr. Klein is a member of the New York, Boston and Massachusetts Bar Associations, the Computer Law Association and the Licensing Executives Society.


Mr. Klein has been named to the AlwaysOn “Power Players” list in 2012 and 2013, which honors leaders in the digital media marketplace in New York City. Additionally, he has been recognized as a “Leading Patent & Technology Licensing Lawyer” by Intellectual Asset Management magazine as part of its IAM Licensing 250 survey.

In The News









J.D., 1996
Boston University School of Law

(cum laude)

B.A., 1992
University of Massachusetts Amherst

(cum laude)



New York
Get In Touch
German Translation
Our clients rely on us for world-class advisory services, counsel on complex transactional work and high-stakes litigation. Specializing in matters involving the financial, life sciences, private equity, real estate, and technology industries, we use a collaborative, cross-disciplinary approach to resolve our clients’ most challenging issues. To find out more, please contact us.
Unsere Kunden verlassen sich auf uns für erstklassige Beratungsdienste, beraten über komplexe Transaktionsarbeiten und High-Stakes-Prozesse. Spezialisiert auf Angelegenheiten der Finanz-, Life-Sciences-, Private-Equity-, Immobilien-und Technologie-Industrie, verwenden wir eine kooperative, interdisziplinäre Ansatz zur Lösung unserer Kunden am schwierigsten Fragen. Um mehr zu erfahren, kontaktieren Sie uns bitte.

Nos équipes interviennent aux côtés de nos clients, industriels, fonds d’investissement, startups, institutions financières et dirigeants, dans le cadre de transactions et de contentieux complexes, et apportent des conseils de tout premier plan dans les secteurs financiers, des Sciences de la Vie, du Private Equity, de l’immobilier et des technologies. Nous traitons les dossiers juridiques de manière intègre, ingénieuse, souple et audacieuse pour répondre efficacement aux enjeux propres à chacun de nos clients, quels que soient la taille de l’opération et le secteur d’activité. Pour en savoir plus, contactez-nous.


Search Other Lawyers
Recherche par Pratique