Google, Microsoft, OpenAI, and Perplexity are involved in legal disputes concerning AI copyright infringement and Google's search monopoly. Google aims to demonstrate that AI-powered search is separate from its search monopoly by procuring information from these companies, focusing on rivals' search and advertising efforts. Google's subpoenas seek various documents: - **OpenAI** is asked to provide usage data for ChatGPT, agreements with Bing Search API, and details on AI model training data. It is also requested to share content licensing agreements and search distribution plans. - **Perplexity** is asked for user data, financial performance information, and monetization strategies, alongside details on AI training data and distribution agreements. - **Microsoft** is asked for agreements with companies like OpenAI and documents on data used to train models. Additionally, Google seeks information on using AI tools for search results and content licensing. The three companies respond differently. Perplexity initially claimed not to receive a subpoena but now plans to object while starting document production by January.

OpenAI agrees to some requests, objecting to others as burdensome due to trade secrets. Microsoft will comply with most requests, except four, citing relevance and proportionality. As legal proceedings continue, there's speculation that Google might need to sell Chrome, a process that could take years, allowing it to bolster its Gemini app, a competitor to ChatGPT and Perplexity. Some believe startups like OpenAI and Perplexity need time to gain market share, while Google maintains its hold on search due to its ubiquity and ease. The DOJ has proposed Google sell Chrome, sparking discussions around the ad-tech antitrust trial. Experts remain uncertain about the trial's remedy phase, which could reshape the competitive landscape among AI-powered search engines.