Motion Offense v. Dropbox: a $35M patent claim collapses at trial
2020–2026
After nearly four years of litigation, a Texas jury found Dropbox did not infringe four file-sharing patents asserted by Motion Offense LLC, defeating a roughly $35 million damages demand — part of a wider patent fight Dropbox largely won.
What happened
Motion Offense LLC, an entity associated with prolific inventor Robert Paul Morris, sued Dropbox in the U.S. District Court for the Western District of Texas, asserting a family of file-sharing and data-management patents and seeking roughly $35 million in damages. Dropbox contested both infringement and the patents' validity, mounting parallel challenges at the Patent Trial and Appeal Board (PTAB) via inter partes review.
In 2023, after a five-day trial capping nearly four years of litigation, a jury found that Dropbox had not infringed the four asserted patents. Dropbox and Box also prevailed on related validity questions, with the Federal Circuit declining to revive certain Motion Offense patents the companies had challenged. PTAB activity in the dispute continued into 2025 (e.g., IPR2024-00286), reflecting how patent campaigns generate years of follow-on proceedings even after a trial win.
This matter is one of several patent suits Dropbox has faced over the years. Unlike the early Thru trademark fight or the foundational FTC encryption complaint, the Motion Offense saga is a case Dropbox decisively won — a reminder that not every legal action against the company reflects wrongdoing, and that documenting outcomes (wins as well as losses) is part of an honest record.
Impact
The case illustrates the patent-assertion pressure cloud-storage incumbents absorb and the cost of defending it: years of litigation and parallel PTAB proceedings even to reach a clean defense verdict. For the archive it is an important counter-example — a high-dollar claim that failed — that keeps the legal record balanced and credible rather than one-sided.