Microsoft appears across 25 entries spanning 2023–2026.
2026
- The Seattle Times and Newsday Sue OpenAI and Microsoft for Copyright Infringement, DMCA Violations and Trademark Dilution Notable
- US Justice Department Files Statement of Interest Backing OpenAI's Fair-Use Defense in the New York Times Copyright MDL Notable
- More Than 100 Companies Sign an OpenAI-Convened Letter Warning of Imminent AI-Enabled Cyberattacks Notable
- Microsoft Launches In-House MAI Model Family at Build 2026 Notable
- Nvidia Enters PC Chip Market with RTX Spark Superchip, Enabling On-Device Frontier-Scale AI Inference Notable
- Jury Dismisses Elon Musk's Lawsuit Against OpenAI on Statute of Limitations Grounds Notable
- CAISI Signs Pre-Deployment AI Evaluation Agreements with Google DeepMind, Microsoft, and xAI Notable
- Department of War Signs Classified Network AI Agreements with Eight Companies, Excluding Anthropic Notable
- Musk v. Altman Trial Opens in Oakland: Charitable Trust and Unjust Enrichment Claims Proceed Notable
- OpenAI-Microsoft Partnership Restructured: Exclusivity Ends, AGI Clause Removed Notable
- OpenAI Releases GPT-5.3-Codex Unified Coding Model Major
2025
- OpenAI Completes PBC Restructuring; Microsoft Gets 27% Stake Worth ~$135B Landmark
- Microsoft-OpenAI Partnership Renegotiated: Azure Exclusivity Ends Major
- SDNY Denies Dismissal of AI-Output-Based Copyright Infringement Claims Major
- SDNY Denies OpenAI Motion to Dismiss Core Copyright Claims Major
- JPML Consolidates 12 AI Copyright Cases into SDNY MDL 3143 Landmark
- OpenAI Raises $40 Billion SoftBank-Led Round at $300B Valuation Landmark
- OpenAI and Google Adopt Anthropic's Model Context Protocol Landmark
- Trump Announces $500 Billion Stargate AI Infrastructure Project Landmark