Raytheon, Nokia and Ericsson all filed briefs with the Federal Circuit encouraging the court to decline the Cray mandamus on a motion to transfer from EDTX… Cray is asking the Federal Circuit to decide two issues: did the Eastern Texas court err in holding that a “regular and established place of business” need not be a physical presence; and did the district court err in determining that the residence of a single work-from-home employee constitutes a “regular and established place of business” of his employer.