PEREZ-SOLAER et al v. KHOKHAR et al v. KHOKHAR et al v. MAEDA et al - Page 13




          Interference No. 103,352                                                    

          explanatory and must be discussed with particularity by a                   
          witness.  37 CFR 1.671(f); Rebstock v. Flouret, 191 USPQ 342, 345           
          (Bd. Pat. Int. 1975).  Since only the inventors testified as to             
          exhibits KX 3-5, we find that those exhibits do not constitute              
          sufficient circumstantial evidence of an independent nature to              
          satisfy the corroboration rule.                                             
               With regard to the analytical report from Robertson                    
          Laboratory (KX-6), it too has not been discussed with                       
          particularity by a witness other than inventor Khokhar (KR-16).             
          Although non-inventor Oeckinghaus did testify for the purpose of            
          authentication, she did not discuss any of the circumstances                
          surrounding the entries made in the report.  Thus, the analytical           
          report also does not constitute sufficient circumstantial                   
          evidence of an independent nature to corroborate synthesis of a             
          compound within the scope of the count.  Moreover, an elemental             
          analysis alone is generally not definitive with regard to                   
          identification of a specific compound.  Cf. Berges v. Gottstein,            
          618 F.2d at 774, 205 USPQ at 694.                                           
               Significantly, there is no evidence of record to corroborate           














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