A proposed law to combat digital piracy stalled last year in the face of widespread public opposition, but district courts are embracing its controversial remedies against Internet companies that do business with alleged infringers in trademark cases.

So far this year, at least 18 orders affecting both alleged infringers and intermediaries — domain-name registries, payment processors, search engines and Internet service providers — have sprung up in the Northern District of Illinois, the Southern District of Florida and the Southern District of New York.