ILCS » Chapter 405 · Act 5
Illinois Compiled Statutes

405 ILCS 5/3-203 (2026)

Every petition, certificate and proof of service required by this Chapter shall be executed under penalty of perjury as though under oath or affirmation, but no acknowledgement is required

✓ current as of May 2026
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(405 ILCS 5/3-203) (from Ch. 91 1/2, par. 3-203)
    Sec. 3-203. Every petition, certificate and proof of service required by this Chapter shall be executed under penalty of perjury as though under oath or affirmation, but no acknowledgement is required.
(Source: P.A. 80-1414.)

    
Notes of Decisions
Cited in 2 cases, 2018–2018 · leading case: In re Jian L., 2018 IL App (4th) 170387 (Ill. App. Ct. 2018).
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In re Jian L., 2018 IL App (4th) 170387 (Ill. App. Ct. 2018). “Propriety of the Certificates Attached to the State’s Petition ¶ 29 Respondent argues that the two certificates attached to the State’s petition for involuntary admission were not “executed under penalty of perjury as though under oath or affirmation,” as required by section…”
People v. Jian L. (In Re Jian L.), 2018 IL App (4th) 170387 (Ill. App. Ct. 2018). “Propriety of the Certificates Attached to the State's Petition ¶ 29 Respondent argues that the two certificates attached to the State's petition for involuntary admission were not "executed under penalty of perjury as though under oath or affirmation," as required by section…”
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