Ex parte TWEDEN et al. - Page 9




          Appeal No. 1999-2646                                                        
          Application No. 08/794,398                                                  

          III. The 35 U.S.C. § 102(b) rejection of claim 14 as being                  
          anticipated by Duran ‘021                                                   
               The arguments advanced by the appellants against the 35                
          U.S.C. § 102(b) rejection of method claim 14 as being                       
          anticipated by Duran ‘021 are the same as those advanced in                 
          connection with claim 1, and are similarly unpersuasive.  The               
          prosthesis providing step in claim 14 finds response in                     
          Duran’s provision of the reabsorbable rings or stents 1 as                  
          they exist prior to being covered with cloth for implantation,              
          and the prosthesis implanting step in claim 14 finds response               
          in Duran’s implantation step even though the reabsorbable                   
          rings or stents 1 are covered with cloth at this time.  The                 
          “comprising” transitional phrase in claim 14 leaves the claim               
          open for the inclusion of unspecified elements.  See PPG                    
          Industries Inc. v. Guardian Industries Corp., 156 F.3d 1351,                
          1354, 48 USPQ2d 1351, 1353-54 (Fed. Cir. 1998); Ex parte                    
          Davis, supra.  Among such elements would be the step of                     
          covering the prosthesis provided in the first step of the                   
          claim before implanting it in the second step.                              
               Thus, the appellants’ position that the subject matter                 
          recited in claim 14 distinguishes over Duran ‘021 is                        

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