Ex parte WOLF et al. - Page 6




          Appeal No. 1998-2831                                       Page 6           
          Application No. 08/541,013                                                  


          Claim 6                                                                     
               We will not sustain the rejection of claim 6 under 35                  
          U.S.C. § 102(b).                                                            


               To support a rejection of a claim under 35 U.S.C. §                    
          102(b), it must be shown that each element of the claim is                  
          found, either expressly described or under principles of                    
          inherency, in a single prior art reference.  See Kalman v.                  
          Kimberly-Clark Corp., 713 F.2d 760, 772, 218 USPQ 781, 789                  
          (Fed. Cir. 1983), cert. denied, 465 U.S. 1026 (1984).                       


               Claim 6 reads as follows:                                              
                    A safety-shielded trocar, comprising;                             
                    a trocar cannula;                                                 
                    an inner cannula within said trocar cannula, wherein              
               said inner cannula moves axially relative to said trocar               
               cannula between an extended position and a retracted                   
               position;                                                              
                    means acting on the rear end of said inner cannula                
               for biasing said inner cannula to its extended position;               
                    means for locking within said trocar cannula,                     
               wherein said means for locking is movable between a first              
               position that locks said inner cannula in its extended                 
               position and a second position that permits axial                      
               movement of said inner cannula to its retracted position;              
               and                                                                    
                    means for latching within said trocar cannula                     
               wherein, upon the movement of said means for locking from              
               its first position to its second position, said means for              







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