Ex Parte Langford - Page 3




              Appeal No. 2003-0188                                                                             
              Application No. 09/781,386                                                                       


              rejection appearing in that decision is incorrect.  Thus, we affirmed the Examiner’s             
              rejection of claims 21, 26, 27 and 34 to 36 as unpatentable under 35 U.S.C. § 102(b) or in       
              the alternative under 35 U.S.C. § 103(a) over Williams or Struss for the reasons appearing       
              on pages 7 and 8 of the original decision.                                                       
              II.                                                                                              
                     37 CFR § 1.197(b) provides as follows:                                                    
                     Appellant may file a single request for rehearing within two months from                  
                     the date of the original decision, unless the original decision is so                     
                     modified by the decision on rehearing as to become, in effect, a new                      
                     decision, and the Board of Patent Appeals and Interferences so states.                    
                     The request for rehearing must state with particularity the points believed               
                     to have been misapprehended or overlooked in rendering the decision                       
                     and also state all other grounds upon which rehearing is sought.  See §                   
                     1.136(b) for extensions of time for seeking rehearing in a patent                         
                     application and § 1.550(c) for extensions of time for seeking rehearing in                
                     a reexamination proceeding.                                                               
                     Appellant asserts that the Board’s June 20th decision is premised on a                    
              misunderstanding of the claimed invention.  (Request for Rehearing, p. 3).   Specifically,       
              Appellant asserts that the invention of claims 21, 28, and 29-36 required adding a dust          
              reducing additive to an existing joint compound or wall repair compound.  This is the            
              same argument that appears on page 18 of Appellant’s Brief.  Specifically, Appellant             
              argued “[t]he present invention provides a method of reducing the quantity of dust               


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