U.S. Post-Grant Proceedings

U.S. Reexamination Proceedings:

  • Control Number 90009880 - Ex Parte Reexamination of Helferich's 7499716 Patent
    • Certificate Issued - Original, amended, and new claims confirmed
  • Control Number 90009882 - Ex Parte Reexamination of Helferich's 7835757 Patent
    • Certificate Issued - Original, amended, and new claims confirmed
  • Control Number 90009883 - Ex Parte Reexamination of Helferich's 7280838 Patent
    • Certificate Issued - Original, amended, and new claims confirmed
  • Control Number 95002016 - Inter Partes Reexamination of Helferich's 8134450 Patent 
    • Certificate Issued - Original and new claims confirmed
  • Control Number 95001739 - Inter Partes Reexamination of Helferich's 7835757 Patent
    • Reexamination Denied in Helferich's Favor
  • Control Number 95001738 - Inter Partes Reexamination of Helferich's 7499716 Patent
    • Reexamination Denied in Helferich's Favor
  • Control Number 95001740 - Inter Partes Reexamination of Helferich's 7280838 Patent
    • Reexamination Denied in Helferich's Favor
  • Control Number 95001983 - Inter Partes Reexamination of Helferich's 8116741 Patent
    • Appealed to PTAB
  • Control Number 95001991 - Inter Partes Reexamination of Helferich's 8107601 Patent
    • Appealed to PTAB
  • Control Number 95001984 - Inter Partes Reexamination of Helferich's 7835757 Patent
    • PTAB Decision Issued - Original and new claims confirmed
  • Control Number 95001867 - Inter Partes Reexamination of Helferich's 7499716 Patent
    • Appealed to PTAB
  • Control Number 95002088 - Inter Partes Reexamination of Helferich's 7280838 Patent
    • Reexamination Terminated in Helferich's Favor
  • Control Number 95001996 - Inter Partes Reexamination of Helferich's 7280838 Patent
    • Reexamination Denied in Helferich's Favor
  • Control Number 95001864 - Inter Partes Reexamination of Helferich's 7155241 Patent
    • RAN Issued - Original and New Claims confirmed
  • Control Number 95002140 - Inter Partes Reexamination of Helferich's 8224294 Patent
    • Appealed to PTAB

U.S. Inter Partes Review Proceedings:

  • IPR2013-00033
    • The Federal Circuit affirmed 41 claim rejections