As per patent office journal dated 13/08/2021, patent number 374065 has been granted to DHANUKA AGRITECH LIMITED that is titled SYNERGISTIC HERBICIDAL FORMULATION COMPRISING COMBINATION OF HALOSULFURON METHYL AND METRIBUZIN FOR CONTROL OF SEDGES, NARROW AND BROAD LEAF WEEDS IN SUGARCANE.
The primary independent claim of this patent states a synergistic herbicidal formulation having a combination of Halosulfuron methyl in an amount 6% by weight of the formulation, Metribuzin in an amount 50% by weight of the formulation and one agrochemical acceptable excipient.
During the patent prosecution, the patent examiner objected to this patent under section 3(d) of the Indian Patents Act. The patent applicant responded to this objection by stating that in the present invention, the composition of present invention includes a technical differentiating feature, combination of Halosulfuron methyl in an amount 6% by weight of the formulation and Metribuzin in an amount 50% by weight of the formulation. Moreover, the synergistic herbicidal formulation of the present invention have various beneficial advantageous technical effects, such as supra and unexpected activity of controlling the sedges on sugarcane crop. Therefore, the present invention does not fall under section 3(d) of the Patents Act.
This patent falls under the category of Chemical. Overall, this patent covers a synergistic herbicidal formulation having a combination of Halosulfuron methyl in an amount of 6% by weight of the formulation, Metribuzin in an amount of 50% by weight of the formulation, and at least one agrochemical acceptable excipient for the control of sedges, narrow leaf weeds and broadleaf weeds in Sugarcane. The formulation can be applied as pre-emergence or post-emergence.
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