The packages may look different, but FMC's new Authority Broadleaf and DuPont's Canopy XL both contain the same two active ingredients in identical proportions. C ompetition seems to b e adding to the number of herbicide choices you have available. Not all of the new herbicides you have to choose from ar e unique, however.
Some new products are mirror images of products marketed by competitors.
Having the same active ingredient sold under more than on e name is nothing new. Metribuzin, for example, has been sold as Sencor by Bayer and Lexone by DuPont for years. The hang-up for registration was crop safety. Then the fun started. Zeneca had a patent for safener technology that Monsanto could have infringed.