A companion case, Alberts v. California, involved the advertising and sale of obscene materials.

Cutler v. Dibble (1858) was a companion case to Fellows.

Oral arguments in this case (as well as its companion case) occurred on November 7, 2006.

The majority followed the test for detention set out in the companion case of R. v. Grant:

It is a companion case to R. v. Andrews.

Yasui v. United States was a companion case decided the same day.

Decided in 1974, LaFleur and a companion case involved pregnant public school teachers forced to leave work well in advance of childbirth.

Justice Ginsburg, writing in a companion case, explained that view as follows:

In this and a companion case, the Supreme Court ruled against the segregation.

There was a companion case included in the Supreme Court proceedings.