If you are filing a Federal Circuit appeal, beware that the court will soon require Electronic Case Filing. The initial filing (i.e., case initiating documents) will still be done on paper, but after May 17, 2012 any subsequent filings (such as responsive briefs and petitions) must be done electronically (with some exceptions).
Except as otherwise prescribed by Circuit rule or court order, all briefs, appendices, motions, petitions for rehearing, and other documents filed in cases assigned to the CM/ECF system, must be filed electronically using the CM/ECF system by a filer registered in accordance with ECF-2.
Comments on the new procedures are dues by May 8, 2012. [New Procedures]