How Can Walker Appeal Judge Sumi's Ruling To The State Supreme Court?

Today's big showdown at the Stata Supreme Court is the Walker administration's effort to overturn Dane County Circuit Court Judge Maryann Sumi's permament injunction barring implementation of Walker's union-busting bill.

But as Patrick Marley of the Journal Sentinel notes in this fine analysis of the issues, the Walker administration was not an original complainant against the Sumi ruling.

Those complainants were Republicans in the State Senate involved in passing the measure with procedures so flawed as to be illegal, but they are not filing the appeal and have chosen not to even testify before Sumi before she made her ruling

I'm not a lawyer, so I ask but how the Walker administration even have standing to get in fromt of the Court in the first place?