Kolbe & Kolbe Health & Welfare Benefit Plan v. Medical College of Wisconsin, Inc.

POSNER, Circuit Judge.

These cross-appeals present issues concerning ERISA, Wisconsin law, and Rule 11 sanctions. The plaintiffs are an employee benefit plan and the employer; we’ll refer to them jointly as “the plan.” The defendants are two Wisconsin medical institutions, one a medical college that also provides patient care in clinics and hospitals, the other a children’s hospital. See “About MCW: Facts 2013,” www.mcw. edu/MCWfacts.htm (visited Feb. 4, 2014). The institutions are affiliated and we’ll pretend they’re one, which we’ll call “the hospital.”

In a series of rulings in 2009 and…