Has The DNA Sequencing Technique Gone To The Wrong People?

It was twenty five years when the patent for seminal technique important to the field of biotechnology was awarded but now a biotechnology company has come forward to claim the patent and this has made the government wonder whether it granted the patent to the wrong people. Now the US Patent Office has again started investigations in order to decide the rightful owner of the patent, whether it is California Institute of Technology which currently holds the patent or Rnzo Biochem which is claiming for the same? In case Enzo wins back the patent it would certainly become cash rich whereas Applied Biosystems which licensed the patent from California Institute of Technology stands to lose as up till now it was a leader in the DNA sequencing business.