Ex parte GRIFKA - Page 4




          Appeal No. 96-2454                                                          
          Application No. 08/052,737                                                  


          524 F.2d 1222, 1226, 187 USPQ 664, 667 (CCPA 1975).  We are of              
          the view that such is the case here, for in addition to the inner           
          elastic element specifically mentioned in the text, from our                
          perspective other arrangements, such as elastic means external of           
          the telescopic tubes, would have been apparent to the artisan.              
               The second issue raised by the examiner is that there is no            
          support in the specification for the requirement in claim 1 that            
          each joint splint be coupled at its lower end to the lower leg              
          part “via a lower pivotal point.”  While we agree with the                  
          examiner that the written description is lacking an explicit                
          statement that this is the case, we are persuaded by the                    
          appellant’s arguments that such would have been apparent to one             
          of ordinary skill in the art.  We arrive at this conclusion by              
          applying the principles of geometry.  Given that the point of               
          rotation of the lower leg about the wearer’s knee is beneath and            
          forward of the point of rotation of the joint splints, in order             
          for the joint splints to move rearwardly behind the knee when the           
          knee is bent they must telescopically shorten and must pivot with           
          respect to both of the parts to which they are attached.  It is             
          impossible to have such knee movement if the lower attachment               
          point does not allow the rigid joint splints to pivot with                  
          respect to the lower leg part, and one of ordinary skill would              

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