Over the past decade, some of Apple’s biggest regulatory headaches have come from a little-known federal agency called the U.S. International Trade Commission. The agency’s patent judges have found Apple guilty of appropriating innovations in smartphones, semiconductors and smartwatches. And recently, they forced Apple to remove a health feature from Apple Watches.

Now the tech giant is pushing back. While it defends itself from patent complaints before the I.T.C., Apple has begun lobbying lawmakers to help rewrite the agency’s rules.