PARINS et al. V. SLATER - Page 24




          Interference No. 104,190                                                    



          Abandonment, Suppression or Concealment by the Junior Party                 
                    Although we have determined that the junior party                 
          has not established by a preponderance of the evidence that                 
          the subject matter of the count was reduced to practice, for                
          the sake of completeness we will consider the question of                   
          whether the junior party has abandoned, suppressed, or                      
          concealed the invention within the meaning of 35 U.S.C. §                   
          102(g) as argued by the senior party.  For purposes of this                 
          determination, we must assume, contrary to the evidence, that               
          the junior party actually reduced to practice the subject                   
          matter of the count.  "[W]ithout an actual reduction to                     
          practice there is no invention in existence which can be                    
          abandoned, suppressed, or concealed."  Peeler v. Miller, 535                
          F.2d 647, 651, 190 USPQ 117, 120 (CCPA 1976).                               
                    The question of the loss of a right to a patent due               
          to suppression or concealment arises under 35 U.S.C. § 102(g).              
          The policy behind § 102(g) is to encourage prompt disclosure                
          of the invention to the public by an inventor after he or she               
          has reduced it to practice.  The longer the delays, the                     
          greater is the risk that he or she will be found to have                    


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