Williams-Sonoma went into San Francisco federal court Tuesday with its claim that Amazon.com has created “a fake Williams-Sonoma website” on its platform, while Amazon argued for the right to resell others’ merchandise without having to face ginned-up claims about consumer confusion.

Orrick Herrington & Sutcliffe partner Annette Hurst for Williams Sonoma and Durie Tangri partner Mark Lemley for Amazon ran into a judge who admitted to being a power user of Amazon. U.S. Magistrate Judge Elizabeth Laporte of the Northern District of California said it’s clear to her personally that when Amazon adds the words “by Williams-Sonoma” to Williams-Sonoma merchandise, that simply means Amazon is acting a reseller, which is legal.