A lawsuit in a federal court raises the ticklish issue of whether a company can be hauled to court because its augmented reality game places coveted fantasy creatures and in-game benefits on private property without permission.

Jeffrey Marder, a resident of West Orange, N.J., found in the days after the release of the successful augmented reality game Pokémon Go, that strangers, phone in hand, had begun lingering outside his home.

At least five of them knocked on Marder’s door and asked for access to his backyard to catch and add to their virtual collections of the Pokémon images, superimposed over the real world, that the game developer had placed at the residence without his permission.

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