Paul S. Rafelson, Founder of Rafelson Law PLLC
Paul S. Rafelson is the Founder of Rafelson Law PLLC, an internationally recognized law firm for eCommerce and online business owners. He is admitted in Florida and New Jersey. Katherine (Katie) Dariano, Senior Counsel, leads the firm’s M&A practice. Paul originates the firm’s M&A work and works with her on deals.
Role at the firm
Paul founded the firm and originates its M&A work. He also handles Amazon account matters, intellectual property, compliance work and Prop 65 notices.
Before founding the firm Paul was in-house tax counsel at Microsoft, Walmart and GE. He sold on Amazon before FBA existed. His commentary on Amazon and online business has appeared on CNN, CNBC, PBS Frontline, Bloomberg and in The New York Times. He also founded SellerBasics, a separate Amazon account-health subscription service.
More than $1B in closed transaction value across client eCommerce deals.
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Paul and Katie

Paul S. Rafelson
Founder
Admitted in Florida (2005) and New Jersey (2006).

Katherine (Katie) Dariano
Senior Counsel
Leads the firm’s M&A practice. Admitted in New York (2021).
Admissions
- Florida (2005)
- New Jersey (2006)
For matters in jurisdictions where our attorneys are not admitted, we work with local counsel or seek admission as the law requires.
Education
- LL.M. in Taxation, New York University (2017)
- J.D. and M.B.A., Villanova University (2005)
- B.B.A. in Accounting, University of Massachusetts Amherst (2001)
Online Merchants Guild, the Supreme Court and Congress
Paul founded the Online Merchants Guild in 2018, a volunteer-led trade association run by and for Amazon sellers. It is the world’s first seller-run Amazon seller trade association.
- Paul wrote the Online Merchants Guild’s amicus brief in South Dakota v. Wayfair at the U.S. Supreme Court (No. 17-494, 2018) as counsel of record. He submitted written testimony to the House Small Business Committee for its March 3, 2020 hearing on the Wayfair decision, and the Guild’s written statements to the House Judiciary Committee’s antitrust investigation of Amazon (2020) and its 2021 antitrust markup.
- In the House Judiciary Antitrust Subcommittee’s October 2020 staff report (reprinted as Committee Print 117-8, 2022), the Guild was cited 13 times, more than any other outside group, on Amazon’s treatment of third-party sellers.
Teaching
Paul taught state and local taxation as an adjunct professor at Pace Law School.
Practice areas
Paul’s work with online business owners includes the following. Each page covers one of these areas in detail.
Selling an Amazon or eCommerce business
Sell-side terms and process.
Buying an online business
Diligence and the purchase agreement.
Buying or selling an online business
Overview of sell-side and buy-side work.
Amazon account suspension
Notices, appeals and Plans of Action.
Amazon Section 3 deactivation
Termination, held funds and dispute resolution.
Intellectual property
Trademarks, copyright, patent disputes and Amazon IP claims.
Compliance with laws
FTC, FDA, EPA and other rules for online businesses.
Prop 65 for online businesses
Warnings, 60-day notices and indemnification.
Frequently asked questions
Related pages
Katherine (Katie) Dariano, Senior Counsel
Katie’s biography.
Media and press
Paul’s op-eds, interviews and press coverage.
Contact Rafelson Law
Tell us where you are in the matter.
Sources and notes
- House Judiciary Subcommittee on Antitrust, Commercial and Administrative Law, Majority Staff Report and Recommendations, Investigation of Competition in Digital Markets (October 2020; reprinted as Committee Print 117-8, Part I, 2022).
- Brief of Amicus Curiae Online Merchants Guild, South Dakota v. Wayfair, No. 17-494 (U.S. Apr. 4, 2018), Paul S. Rafelson, Counsel of Record: supremecourt.gov docket.
- Written Testimony of Paul Rafelson, House Small Business Committee, Subcommittee on Economic Growth, Tax and Capital Access, hearing of Mar. 3, 2020.
- Letter of the Online Merchants Guild to the House Judiciary Subcommittee on Antitrust, Commercial and Administrative Law, Aug. 4, 2020 (HHRG-116-JU05-20200729-SD014).
- Online Merchants Guild, About page.