positively regulates tyrosine phosphorylation of STAT protein regulation of tyrosine phosphorylation of STAT protein positive regulation of tyrosine phosphorylation of STAT protein https://github.com/geneontology/go-ontology/issues/28278 up-regulation of tyrosine phosphorylation of STAT protein stimulation of tyrosine phosphorylation of Stat5 protein positive regulation of tyrosine phosphorylation of Stat3 protein GO:0042529 stimulation of tyrosine phosphorylation of STAT protein activation of tyrosine phosphorylation of STAT protein positive regulation of tyrosine phosphorylation of Stat1 protein stimulation of tyrosine phosphorylation of Stat7 protein GO:0042523 GO:0042520 GO:0042526 upregulation of tyrosine phosphorylation of Stat4 protein upregulation of tyrosine phosphorylation of STAT protein up-regulation of tyrosine phosphorylation of Stat4 protein up regulation of tyrosine phosphorylation of STAT protein GO:0042517 biological_process activation of tyrosine phosphorylation of Stat2 protein up regulation of tyrosine phosphorylation of Stat6 protein up-regulation of tyrosine phosphorylation of Stat2 protein GO:0042511 stimulation of tyrosine phosphorylation of Stat1 protein GO:0042515 upregulation of tyrosine phosphorylation of Stat2 protein upregulation of tyrosine phosphorylation of Stat6 protein activation of tyrosine phosphorylation of Stat4 protein up regulation of tyrosine phosphorylation of Stat4 protein stimulation of tyrosine phosphorylation of Stat3 protein up regulation of tyrosine phosphorylation of Stat2 protein positive regulation of tyrosine phosphorylation of Stat6 protein up-regulation of tyrosine phosphorylation of Stat6 protein activation of tyrosine phosphorylation of Stat6 protein positive regulation of tyrosine phosphorylation of Stat4 protein stimulation of tyrosine phosphorylation of Stat4 protein stimulation of tyrosine phosphorylation of Stat6 protein positive regulation of tyrosine phosphorylation of Stat2 protein up-regulation of tyrosine phosphorylation of Stat3 protein up-regulation of tyrosine phosphorylation of Stat1 protein up regulation of tyrosine phosphorylation of Stat5 protein activation of tyrosine phosphorylation of Stat1 protein up regulation of tyrosine phosphorylation of Stat7 protein upregulation of tyrosine phosphorylation of Stat7 protein upregulation of tyrosine phosphorylation of Stat1 protein up-regulation of tyrosine phosphorylation of Stat5 protein up regulation of tyrosine phosphorylation of Stat3 protein positive regulation of tyrosine phosphorylation of Stat7 protein activation of tyrosine phosphorylation of Stat3 protein GO:0042531 up-regulation of tyrosine phosphorylation of Stat7 protein positive regulation of tyrosine phosphorylation of Stat5 protein upregulation of tyrosine phosphorylation of Stat3 protein activation of tyrosine phosphorylation of Stat5 protein upregulation of tyrosine phosphorylation of Stat5 protein activation of tyrosine phosphorylation of Stat7 protein up regulation of tyrosine phosphorylation of Stat1 protein stimulation of tyrosine phosphorylation of Stat2 protein Any process that activates or increases the frequency, rate or extent of the introduction of a phosphate group to a tyrosine residue of a STAT (Signal Transducer and Activator of Transcription) protein. positive regulation of peptidyl-tyrosine phosphorylation biological regulation