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About me

With more than a decade of hands-on experience, Jeff devotes his practice to intellectual property and Internet-related litigation. He has litigated numerous matters, including copyright, trademark, trade secret, domain name, CAN-SPAM, data breach, Internet defamation and other Internet-related disputes in federal court, state court and arbitration proceedings. Jeff’s clients are primarily online retailers of everyday products and services, including dietary supplements, office supplies, financial products, home electronics, car rental services, business formation services, religious organizations, and schools and universities. 


A large portion of Jeff’s practice involves intellectual property litigation in the online space, and he regularly represents both defendants and plaintiffs in copyright and trademark infringement lawsuits involving website content.  Jeff also devotes a significant portion of his practice to defending spam litigation and has been involved in several precedent-setting cases. Jeff also regularly litigates matters regarding complex e-commerce systems, including issues relating to merchant processing, online payment systems, affiliate networks and negative options. 


In addition to his litigation practice, Jeff counsels clients on strategic Internet-related issues, including compliance with FTC regulations in online marketplaces, advising on the design and operation of e-commerce websites and the disclosures made on those websites.


Prior to joining Kronenberger Rosenfeld, Jeff was with Howard Rice Nemerovski Canady Falk & Rabkin in San Francisco, and before that, with Covington & Burling in Washington, D.C. Jeff received his J.D., magna cum laude, from Georgetown University Law Center in 2002, where he was elected to the Order of the Coif and was an editor on the Georgetown Law Journal.  He received his A.B. from Stanford University.


Jeff was the winner of the First Annual Stanford Technology Law Review paper competition for his paper, “Spiders and Crawlers and Bots”, Oh My, 2002 Stanford Technology Law Rev. 3. He was awarded a speaking position at the Telecommunication Policy Research Conference, and has been recognized as a Northern California Super Lawyers Rising Star for five consecutive years.


Representative Matters


Spam Litigation Defense


  • Represented a major Internet advertising network in an $11 million federal spam lawsuit by a professional spam plaintiff. Prevailed on behalf of client at summary judgment on all claims in the lawsuit; obtained order awarding over $806,000 in fees and sanctions against the professional spam plaintiff. 


  • Prevailed on motion to dismiss on behalf of multiple defendants named in a $400 million spam lawsuit brought by a major Washington, D.C. law firm.    


  • Represented the owners of a popular online dating website against a professional spam plaintiff in a $19 million California spam lawsuit. Obtained a full dismissal with prejudice for one of the firm’s clients at summary judgment and resolved the remainder of the case shortly thereafter. 


Trademark and Copyright Infringement


  • Represented an online retailer of printer supplies in a trademark infringement lawsuit brought by a billion dollar printer manufacturer. 


  • Successfully defended a web development company in a federal trademark lawsuit.  After a five-day jury trial, the client defeated all of the plaintiff’s claims, with the jury finding that the plaintiff had not established any valid trademark rights. 


  • Represented an online merchant in numerous copyright infringement cases where competitors had copied and displayed the client’s product images on the infringers’ own websites.  In each case, the firm reached a favorable settlement on behalf of the client.    


E-Commerce Systems


  • Represented a large online merchant in a lawsuit against a payment processor and payment gateway, which alleged that the defendants had skimmed small amounts from each of the client’s online transactions resulting in a total theft of more than $1.6 million.  After extensive discovery and motion practice, the parties settled in favor of our client. 


  • Represented the plaintiff in a federal lawsuit against a large online merchant based on the merchant’s creation and settling of financial instruments without proper authorization.  The suit was one of the first to address the federal Restore Online Shoppers’ Confidence Act (ROSCA), and helped define the contours of this important law. The firm ultimately reached a settlement with the defendants in favor of the client. 


“We use a practical approach to all of our litigation. We take into consideration our client’s goals, all of the possible outcomes, and the realistic cost of the litigation in order to develop a vigorous strategy to achieve our client’s goals.”


Photos and videos

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Practice areas


  1. Internet: 40%
    14 years
  2. Intellectual Property: 30%
    14 years
  3. Libel: 20%
    14 years
  4. Business: 10%
    14 years


Payment types:

Check, Credit card

Attorney endorsements

4 total 

Are you an attorney? Endorse this lawyer

  • Denis M Delja

    Jeff and I worked together as co-counsel representing consumers in a complex class action matter involving claims of Internet fraud. I was consistently impressed by Jeff's wealth of knowledge in the developing field of Internet law as well as his practical understanding of how unscrupulous on-line businesses defraud consumers. I would strongly that anyone who believes they have been the victim of an Internet scam contact Jeff for a consultation.


    Denis Delja Personal injury Attorney
    Relationship: Worked together on matter

  • Matthew Monroe Thomson

    I worked with Jeff for over 5 years. Also, after I left the firm, as General Counsel to an online advertising company, I retained Jeff to represent the company in connection with several matters. Jeff is an accomplished and thoughtful attorney with a keen understanding of the business and legal issues facing Internet-related companies.


    Matthew Thomson Internet Attorney
    Relationship: Other

Contact info

Kronenberger Rosenfeld, LLP

150 Post St
Suite 520
San Francisco, CA, 94108

Kronenberger Rosenfeld, LLP

150 Post St, Ste 520
San Francisco, CA, 94108



DCActive 200307/10/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Rising StarSuper Lawyers2014
Rising StarSuper Lawyers2013
Rising StarSuper Lawyers2012
Rising StarSuper Lawyers2011
Rising StarSuper Lawyers2010
Third Place PaperTelecommunications Policy Research Conference2002
First Place PaperStanford Technology Law Journal2002
Work experience
TitleCompany nameDuration
PartnerKronenberger Rosenfeld, LLP2011 - 2014
AssociateKronenberger Rosenfeld, LLP2007 - 2011
AssociateHoward Rice Nemerovski Canady Falk & Rabkin2004 - 2007
AssociateCovington & Burling2002 - 2004
School nameMajorDegreeGraduated
Georgetown University Law CenterN/AJD - Juris Doctor2002
Stanford UniversityN/AAB - Applied Baccalaureate1998
Speaking engagements
Conference nameTitleDate
Internet Law Leadership SummitClickwrap and Browserwrap Agreements: Drafting and Litigation Considerations2012
Telecommunications Policy Research ConferenceOnline Contracts that Restrict Data Collection2002