Copilot Review: Artificial Intelligence for Lawyers

Copilot inside Microsoft 365 apps

Microsoft 365 Copilot works inside familiar tools such as Word, Outlook, Excel, PowerPoint, Teams, Loop, and the Microsoft 365 Copilot app. In Word, it can help draft documents, suggest edits, and summarize text. In Outlook, it can draft emails and summarize long email threads. In Teams, it can recap meetings and highlight action items, which may help small firms keep better track of discussions and follow-up work.

Work IQ and firm context

Microsoft describes Work IQ as the intelligence layer that helps Copilot understand work context, relationships, files, workflows, and connected business data. For a small firm, this means Copilot may be able to work from emails, documents, meetings, chats, calendars, and files that the user already has permission to access. That can make it useful for finding prior work, summarizing project history, and preparing first drafts from firm materials. Firms should review Microsoft 365 permissions before rollout because Copilot can surface information a user is already allowed to see.

Security, privacy, and permission controls

Microsoft states that Microsoft 365 Copilot follows Microsoft 365 commercial privacy, security, and compliance commitments. Microsoft also states that prompts, responses, and data accessed through Microsoft Graph are not used to train foundation large language models. Copilot only surfaces organizational data that individual users have at least view permission to access. For law firms, this makes Microsoft 365 permission hygiene, SharePoint access controls, retention settings, and user training especially important.

Legal department use cases

Microsoft publishes legal-scenario examples for Copilot, including advisory services, contracts, litigation, and day-in-the-life legal workflows. These examples show how Copilot may help legal teams summarize information, draft communications, organize work, prepare issue lists, and work through routine legal department tasks. For small firms, the most practical uses are likely general productivity tasks around email, meetings, document editing, and internal knowledge search. Copilot should not be treated as a legal research platform unless the firm connects and verifies appropriate legal research tools separately.

Copilot is a powerful tool for firms subscribed to Microsoft 365, who are willing to pay $21/user/month to give firm members access. Additionally, Copilot’s reliance on your firm’s data as source material means any of its “writings” are more likely to read like the firm’s “voice” and deliver advice the firm would recommend.

Best fit

• Small firms already using Microsoft 365 for email, documents, meetings, and file storage.
• Attorneys and staff who want AI support inside Word, Outlook, Excel, PowerPoint, Teams, and the Microsoft 365 Copilot app.
• Firms willing to review permissions, train users, and create policies before using AI with client or matter data.

Not ideal for

• Firms looking for a dedicated legal research tool with verified case law and legal secondary sources.
• Firms that do not use Microsoft 365 as a central work platform.
• Firms that need legal practice management, billing, docketing, or matter management built into the AI product.