Okla. Stat. tit. 5A , app 7 § ROP 2
The respondent or the prosecutor may appeal from any judgment of the Trial Division by the filing of a notice of appeal with the Clerk of the Supreme Court within ten (10) days after entry of the judgment. The notice shall be served upon the opposite party by the Clerk mailing a copy of the notice by certified mail to the opposite party and counsel. A copy of the notice shall be mailed by the Clerk to each member of the court.
The party appealing shall complete perfection of the appeal by filing with the Clerk within thirty (30) days after entry of the judgment a petition in error together with three (3) copies of the transcript of the record of proceedings in the Trial Division duly certified by the reporter or Clerk, and ten (10) copies of appellant's brief. Provided, for good cause shown, the presiding judge may extend the time within which the transcript and brief may be filed.
The responding party shall file any response and ten (10) copies of the answer brief within twenty (20) days from the time the petition in error and/or appellant's brief is filed.
Counsel shall immediately on filing serve on the opposing party or their counsel copies of all pleadings, papers and briefs filed, except the transcript.
When the appeal is ready for consideration the presiding judge shall designate a date and time for the court to meet to consider the appeal. The decision shall be made as early as possible. The court may affirm, modify or reverse the judgment of the Trial Division, or enter a new judgment, as justice may require.
Okla. Stat. tit. 5A , app 7 § ROP 2