Where does a defendant corporation "reside" according to 28 U.S.C. 1400?

The Federal Circuit previously held that a corporation "resided" anywhere where a district court could assert personal jurisdiction over it according to 28 U.S.C. 1391(c).  In a recent turn of events, however, the U.S. Supreme Court unanimously overturned this rule in TC Heartland LLC v. Kraft Foods Grp Brands LLC (U.S. 2017), ruling instead that a defendant corporation "resided" only in its state of incorporation for purposes of the patent venue statute.  Many calendared cases will now need to be transferred out of the Eastern District of Texas, one of the most favorable venues for patent owners.