Shortly after New Year’s Day, Man Hyung Lee, 77, was nursing a coffee in his usual seat in a narrow booth at a McDonald’s in Flushing, Queens, when two police officers stepped into the fluorescent light of the restaurant.

Mr. Lee said the officers had been called because he and his friends — a revolving group who shuffle into the McDonald’s on the corner of Parsons and Northern Boulevards on walkers, or with canes, in wheelchairs or with infirm steps, as early as 5 a.m. and often linger until well after dark — had, as they seem to do every day, long overstayed their welcome.

“They ordered us out,” Mr. Lee said from his seat in the same McDonald’s booth a week after the incident, beneath a sign that said customers have 20 minutes to finish their food. (He had already been there two hours.) “So I left,” he said.

“Then I walked around the block and came right back again.”

For the past several months, a number of elderly Korean patrons and this McDonald’s they frequent have been battling over the benches inside. The restaurant says the people who colonize the seats on a daily basis are quashing business, taking up tables for hours while splitting a small packet of French fries ($1.39); the group say they are customers and entitled to take their time. A lot of time.