In Chicago, Illinois, a tech startup can win or lose on what you know that nobody else does. You can protect that edge without patents through trade secret law. But when your contracts and security habits do not match how your team actually works, that protection can weaken fast.
How trade secret law can protect you in 2026
Trade secret law covers information that gives you economic value because others do not know it, and because you keep it secret. Two main laws apply: the Illinois Trade Secrets Act and the federal Defend Trade Secrets Act of 2016. Courts often focus on one issue, which is whether you took reasonable steps to keep the information confidential.
The reasonable-steps standard often means more than a generic or template nondisclosure agreement (NDA). Judges may look for access limits, audit trails and clear internal rules on who can use sensitive data and where they can use it. If your code sits in a shared drive open to every intern, or your team pastes it into public large language model tools, the other side may argue you never had a trade secret to begin with.
Why your NDA can fail under new Illinois rules
Illinois also changed the contract side of trade secret protection. Amendments to the Illinois Workplace Transparency Act took effect Jan. 1, 2026, and they can weaken a take-it-or-leave-it NDA. If a judge rejects those terms, your trade secret case can get harder and more expensive.
Disputes often turn on points like these:
- You give real, bargained-for value for restrictive terms, not just continued employment.
- You include carve-outs that allow reports of unlawful workplace conduct.
- You keep confidentiality language narrow enough to match real business needs.
When your legal documentation does not hold up, a former employee may challenge enforcement and a competitor may claim independent development.
How disputes usually start
Many trade secret fights start after an employee exit, a co-founder split or a vendor fallout. The conflict can turn into a proof problem when your documents, access logs and communications do not line up. A skilled Chicago intellectual property lawyer can help you preserve evidence early and present a clean story when a dispute hits.