how to apply filter states to grid on databound function

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Javascript

MVC

i have kendo grid on page and i want to preserve filter states throught application..i have done that by using cookies..i am getting cookie values as

"{"filter":{"filters":[{"field":"assign_by","operator":"contains","value":"o"},{"field":"assign_by","operator":"contains","value":"k"}],"logic":"or"}}"

but how to reapply these filter values to grid

//storing cookies on other function
function valuechange(){
var dataSource = gview.dataSource;
gridfilter = kendo.stringify({
filter: dataSource.filter()
});

$.cookie("gridState", gridfilter);
}
//retriving cookies

function dataBound(e) {
            var scrollVal = $("#scrollVal").val();
            var gview = $("#grid").data("kendoGrid");
            gview.content.scrollTop(scrollVal);
            if ($.cookie('gridState')) {
                var gridState = unescape(document.cookie);
                var filtergrid = gridState.split("=");

                var filtergridval = filtergrid[1];
                var filterval = filtergridval.split(",");

// filterval gives above cokie i metntioned

}