People v. Nguyen (2022) 82 Cal.App.5th 888 [298 Cal.Rptr.3d 877, 879–885, 82 Cal.App.5th 888]
Summary: Under the Interstate Agreement on Detainers (Detainer Agreement, Pen. Code, § 1389), a person serving a sentence of imprisonment in one participating state who has a detainer for charges pending in another participating state may demand final disposition of those pending charges within 180 days of receipt of the demand. The issue is whether another state’s unreasonable delay in notifying Nguyen of his California detainer and right to demand final disposition of the underlying charges
entitles him to dismissal of his pending charges. (§ 1389, art. III, subd. (a).) This is a question of federal law. Federal decisions hold that dismissal is not a remedy for breach of this duty of prompt notice.