Ex parte ITO et al. - Page 5




          Appeal No. 1998-2836                                                        
          Application No. 08/453,211                                                  


          claim 1 as being representative of the first grouping, supra,               
          and claims 2, 16, 17, 20, 22 and 23, will stand or fall with                
          claim 1, and claim 19  as being representative of the fourth                
          grouping, supra, and claim  21, will stand or fall with claim               
          19.  We will also address the separate arguments made with                  
          respect to claims 3 and 18.                                                 
               Before addressing the examiner's rejection based upon                  
          prior art, it is an essential prerequisite that the claimed                 
          subject matter be fully understood.  Analysis of whether a                  
          claim is patentable over the prior art under 35 U.S.C. §§ 102               
          and 103 begins with a determination of the scope of the claim.              
          The properly interpreted claim must then be compared with the               
          prior art.  Accordingly, we will initially direct our                       
          attention to the appellants’ claim 1 to derive an                           
          understanding of the scope and content thereof.                             
               Independent claim 1 is directed to a bone substitute                   
          material comprising animal bone powder.  We are informed by                 
          the appellants’ specification that “[t]he animal bone is mixed              
          in the form of inorganic powder” which is “obtained by firing               
          and pulverizing the animal bones.”  Specification, p. 8.                    
          Specifically, the appellants’ specification teaches that the                
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