Trademark Overview
On Wednesday, May 6, 2026, a trademark application was filed for STACKS with the United States Patent and Trademark Office. The USPTO has given the STACKS trademark a serial number of 99807670. The federal status of this trademark filing is NEW APPLICATION - RECORD INITIALIZED NOT ASSIGNED TO EXAMINER as of Wednesday, May 6, 2026. This trademark is owned by CALLI LLC. The STACKS trademark is filed in the Education & Entertainment Services and Computer & Software Services & Scientific Services categories with the following description:
Software as a service (SaaS) featuring software for book discovery and reader engagement; providing a web-based platform for curated digital content and reader rewards programs in the field of books and publishing; software as a service (SaaS) featuring software for managing influencer-curated digital content and virtual rewards programs; providing online non-downloadable software for connecting readers with curated book content and literary influencers; white-label software as a service (SaaS) platform for publishers and content creators featuring book discovery, reader engagement, and digital rewards programs
Entertainment services, namely, providing an online platform featuring curated book and publishing recommendations; online book discovery services featuring curated reading lists and collections; providing a website and online platform featuring non-downloadable content in the field of books, reading, and literary entertainment; entertainment services in the nature of an online community for readers and book enthusiasts; providing online non-downloadable content featuring book and publishing information curated by influencers and content creators; online entertainment services featuring digital content drops in the field of books and literary media
