As the future of commercial drones slowly takes shape—airborne pizza delivery, anyone?—one thing is certain: unmanned aircraft will continue to leave a trail of litigation in their wake.

A privacy advocacy group this month filed a challenge to new regulations that permit commercial drones, arguing that the Federal Aviation Administration was wrong not to include privacy standards. There are drone patent fights, lawsuits against state drone regulations, and criminal prosecutions of people who shoot drones out of the sky.