Space Data, which is suing Alphabet over patents and trade secret theft, got USPTO to cancel key Project Loon balloon control patent claims last month
Last summer, a small company called Space Data sued Alphabet's ‘moonshot’ X division. At issue was its effort to deliver internet access …
Context & Ripple Effects
Space Data sued Alphabet's X division last summer over internet-delivery balloons, alleging patent infringement and trade secret theft, and has now won a procedural victory before the litigation even resolves: the project Alphabet would later call a successful experiment but not a viable one lost key balloon-control patent claims when the USPTO cancelled them following Space Data's challenge.
The timing matters because Loon's patent portfolio was its main monetizable asset. After the 2021 shutdown, Alphabet transferred roughly 200 Loon patents to SoftBank and handed others to partner Raven Industries, and the surviving lineage re-emerged in the 2025 Taara laser-internet spinoff from X.
First-order effects
- Alphabet enters the Space Data litigation with a materially weaker defensive position: the invalidated balloon-control claims can no longer be asserted against Space Data, shifting leverage toward the smaller plaintiff.
Second-order effects
- A court-invalidated core patent depresses the value of the remaining Loon portfolio, which helps explain why the post-shutdown disposition was transfer to partners like SoftBank and Raven rather than aggressive licensing.
Third-order effects
- The episode fits a recurring pattern where small incumbent holders of foundational IP use USPTO review proceedings to erode big-tech moonshots' patent moats — a dynamic that follows the technology into successors like Taara if the underlying claims remain contested.
The trend: Big-tech moonshot ventures increasingly find their patent positions contested by smaller IP holders through USPTO challenges, reshaping what those projects can assert, license, or transfer when they wind down or spin out.