Third Chair recently launched!

Launch YC: Third Chair: Agents for in-house legal teams

"Augment your legal team."

TL;DR: Third Chair is building agents for in-house legal teams. They have started in media/entertainment, where their agents can identify IP infringements, collect evidence, and help recover millions of dollars in damages at scale. 📈 They just crossed 6 figures in ARR working with the biggest media/entertainment companies in the world.

Founded by Yoav Zimmerman & Shourya Lala

Yoav previously founded Trendpop (YC W21) and scaled it to $1M ARR in the media/entertainment industry. Before that, he worked on machine learning at Google and AI startups.

Shourya previously founded Fello (YC W22), an investment platform with over a million users and several million in annual investments. Before that, he worked at BlackRock building financial solutions for large institutional clients.

Image Credits: Third Chair

🛑 Problem

In-house legal teams are constantly underwater with a million tasks on their desk. Many of these are repetitive, manual, and mind-numbing:

  • Their customer at a music distributor spent hours tracking down brand contacts, then weeks following up with different emails just to reach the right department.
  • Their customer at a major record label spent weeks reviewing thousands of social media ads and manually logging results in a spreadsheet.
  • Their customer at a music publisher spent a majority of his time on email follow-ups for unpaid invoices, unsigned contracts, and unanswered emails.
  • Their customer at a music rights investment firm didn’t have time to draft individual demand letters for thousands of infringements they wanted to pursue.

When you're buried in a million tasks, it can be hard to prioritize what matters most to your business's bottom line. At worst, you can miss opportunities that could turn the legal department from a cost center into a profit driver.

✅ Solution

That’s why they are building Third Chair for in-house legal teams, starting in media/entertainment. Their customers delegate end-to-end workflows to Third Chair so they can operate at scale:

  • Their browser agent detects uses of your copyrights, trademarks, or name-image-likeness across the web.
  • Their outreach agent finds the right business contact, verifies deliverability, and sends follow-ups.
  • Their contracts agent drafts demand letters for human review, incorporating the context gathered in previous steps.

This is definitely the best product they have seen in this category. Every other vendor just sends them CSV data files from outsourced data labelers. - Top 3 Music Company

Third Chair Product Demo

💡 They have found that in-house legal teams don’t want to learn and buy new software tools, but they’re happy to buy services to solve their problems. That’s why you can work with Third Chair just like you would with a human paralegal. You can send questions or tasks via email to ask@usethirdchair.com, or use their web interface for more complex workflows.

AI will create the first one-person unicorn. Third Chair will be their legal department.

Learn More

🌐 Visit ww.usethirdchair.com to learn more.
🤝 Email the founders here.
🗣️ They are looking to meet anybody in legal/business affairs at a media/entertainment company, such as music, film, sports, or talent. If you have any friends in these departments that are drowning in work, give them a shout!
👣 Follow Third Chair on LinkedInX.

Posted 
June 3, 2025
 in 
Launch
 category
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