Background
Russell Thomas, defendant below, appealed a criminal conviction from the Superior Court of the State of Delaware (Crim. ID No. S2501006371). His opening brief was due May 15, 2026, but Thomas failed to file it by that deadline.
On May 19, 2026, the Chief Deputy Clerk issued a notice of brief delinquency. When Thomas still did not file, the Chief Deputy Clerk sent a show-cause notice by certified mail on May 28, 2026, directing Thomas to explain why the appeal should not be dismissed. Thomas received that notice by June 4, 2026.
As of the date of the court’s order, Thomas had neither responded to the show-cause notice nor filed an opening brief, leaving the motion to dismiss unopposed.
The Court’s Holding
The Delaware Supreme Court dismissed the appeal under Supreme Court Rules 3(b)(2) and 29(b). Because Thomas failed to file an opening brief and failed to respond to the show-cause notice, the court deemed dismissal unopposed and entered the order accordingly.
The dismissal was entered by order of the court, signed by Justice N. Christopher Griffiths.
Key Takeaways
- An appellant’s failure to file an opening brief by the court-set deadline, without explanation or response to a show-cause notice, will result in dismissal of the appeal.
- Delaware Supreme Court Rules 3(b)(2) and 29(b) provide express authority for dismissal in these circumstances.
- Receipt of a certified-mail show-cause notice creates an obligation to respond; silence is treated as non-opposition to dismissal.
Why It Matters
This order is a straightforward application of Delaware’s appellate briefing rules, but it serves as a reminder that procedural defaults — even on the appellant’s own deadlines — can result in the forfeiture of appellate review entirely. Criminal defendants who miss briefing deadlines risk losing their appeal on procedural grounds before the merits are ever considered.
Practitioners in Delaware should note that the court’s show-cause process provides a final opportunity to cure a delinquency; failure to respond to that notice will be treated as consent to dismissal under the applicable rules.