United States Federal Circuit

Where multiple claims each recite the same mechanism, all claims will be invalid for impossibility if the mechanism is shown to be inoperative.

Appellate Information

• Decided 09/21/2001
• Published 09/21/2001

Judges

• RADER, Circuit Judge., Before RADER, Circuit Judge, PLAGER, Senior Circuit Judge, and DYK, Circuit Judge.

Court

• United States Federal Circuit

Counsel

• For Appellant:
  
• James P. Bradley,Sidley & Austin, of Dallas, TX, argued for plaintiff-appellant.   With him on the brief were Kathi A. Cover and William D. McSpadden.   Of counsel were Ivan S. Kavrukov, Cooper & Dunham LLP, of New York, NY;  and Donald F. Parsons, Jr., Morris, Nichols, Arsht and Tunnell, of Wilmington, DE.


• For Appellees:
  
• C. Randall Bain, Brown & Bain, P.A., of Phoenix, AZ, argued for defendant-appellee.   With him on the brief were C. Mark Kittredge and Roger A. Denning.