Also known as: tacit consent
Written by attorneys · grounded in primary & secondary sources — see below
Consent inferred from a person's conduct or from surrounding circumstances rather than from an express statement. The inference arises when the person's actions or the situation would lead a reasonable observer to conclude that permission has been granted for a particular invasion of interests.
Ivan Ivanov collapses unconscious on the street after a severe allergic reaction. A bystander calls an ambulance and paramedics arrive to find Ivan in critical condition. Without any express statement from Ivan, the paramedics administer life-saving medication and transport him to the hospital. The treatment proceeds lawfully because the circumstances support an inference that Ivan would have consented if able to speak.
Ira Irving, a Michigan resident, signs a twenty-year franchise agreement with Ivy Investments, a Florida corporation, that contains a Florida choice-of-law clause and requires all disputes to be litigated in Florida courts. After years of performance under the contract, Ira sues Ivy Investments in Michigan. The Michigan court may exercise personal jurisdiction because Ira's voluntary entry into the long-term relationship with substantial Florida connections supports an inference of consent to suit in Florida.
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Iris Irons is arrested at her home pursuant to a valid warrant. Officers allow a television crew to accompany them inside and film the arrest. Iris later sues the officers for violating her Fourth Amendment rights. The presence of the media crew exceeds any implied consent that might arise from routine police practices, because homeowners do not ordinarily consent to media intrusion during the execution of a warrant.
Isabelle Inman purchases shares in a Delaware corporation while residing in another state. When a shareholder derivative suit is filed in Delaware, Isabelle objects to personal jurisdiction. The Delaware court may exercise jurisdiction because Isabelle's voluntary purchase of stock in a Delaware entity supports an inference that she consented to the state's adjudicative authority over disputes concerning that stock.
Iain Irons joins a conspiracy formed in one district. An overt act in furtherance of the conspiracy occurs in a second district with Iain's knowledge and acquiescence. Iain may be prosecuted in the second district because his continued participation after learning of the overt act supports an inference of consent to the conspiracy's continuation in that location.
Idina Iverson elects to represent herself at trial but accepts the appointment of standby counsel. During the proceedings, standby counsel actively participates without objection from Idina. The court may treat Idina's silence as implied consent to the extent of counsel's participation, allowing the hybrid representation to continue without violating her right to self-representation.
Implied consent arises from circumstances such as an unconscious patient's life-threatening condition, allowing treatment without an express statement. Express consent requires a direct statement of permission. The Restatement treats the emergency privilege as closely related to consent but grounded in an independent privilege rather than actual agreement.
Supporting sources
Yes. Under Federal Rule of Civil Procedure 15(b)(2), when an issue not raised in the pleadings is tried by the parties' express or implied consent, it is treated as if raised in the pleadings. Failure to object while evidence on the issue is presented can constitute the required consent.
Supporting sources
Yes. Participants in a closely regulated industry are deemed to have given implied consent to reasonable regulatory inspections authorized by statute. The substantial government interest in the industry supports the reasonableness of the inspections under the Fourth Amendment.
Supporting sources
…since it required only a finding that the out-of-state driver had used the State's roads. By contrast, both the fictions of implied consent to service on the part of a foreign corporation and of corporate presence required a finding that the corporation was "doing business" in the forum State. Defining the criteria for making…