Monday, October 10, 1994
DNA Plant Technology Corp. will likely have to deal with a patent that issued to
Monsanto Co. last week, if it is to commercialize its genetically engineered extended
The U.S. patent, No. 5,352,605, covers CaMV promoters, the workhorse promoters used to
control gene expression in genetically engineered plants. The 35-S promoters covered by
the patent are derived from the cauliflower mosaic virus.