Legal Layer | Sena Evren | Substack

Legal architecture for AI builders and founders. Turning complex liability, privacy, and regulatory questions into practical product decisions. Click to read Legal Layer, by Sena Evren, a Substack publication with hundreds of subscribers.

legallayer.substack.com

Legal Layer | Sena Evren | Substack · Oct 02, 2026

ARTIFICIAL INTELLIGENCE

What does Thomson Reuters' landmark AI copyright win tell us about fair use and training data?

Training on a competitor's data to build a rival product is not fair use. Training a general-purpose model probably still is. The line just got clearer.

TAMIKA MONTGOMERY REEVESROSS

Legal Layer | Sena Evren | Substack · Jul 23, 2026

LEGAL SYSTEM AND JUSTICE

When Does Distilling GPT Become Theft?

The law of distillation: How API scraping and open-weight model provenance expose developers to trade secret claims and the exact steps to protect your AI stack. explained for builders.

DELAWAREOPEN AINVIDIA

Legal Layer | Sena Evren | Substack · Jun 30, 2026

PRIVACY ENGINEERING AND DATA PROTECTION

What Happens to Your AI Chats When You Die?

The most private record of your life now sits on a company's server. What happens to your AI archive when you die: who can reach it, who cannot, and what to do, explained for everyone.

FRANCEITALYOPEN AIGOOGLE

Legal Layer | Sena Evren | Substack · Jun 15, 2026

PRIVACY ENGINEERING AND DATA PROTECTION

How Do You Delete a User From a Model You Already Fine-Tuned?

GDPR and CCPA deletion rights on AI training data: what the law requires and how to comply, explained for teams actually building with user data.

CALIFORNIA

Legal Layer | Sena Evren | Substack · Jun 03, 2026

LEGAL SYSTEM AND JUSTICE

Do You Own Anything That You Create With AI?

Copyright law explained for anyone who creates anything with AI: developers, designers, writers, founders, and researchers.

UKUSSHIRA PERLMUTTER