Q1: What area of law does Cobbs v. Grant primarily address?
Torts
Q2: What was the central legal issue in Cobbs v. Grant?
Does a physician's duty to obtain informed consent require disclosure measured by professional standards of the medical community, or by what information is material to a reasonable patient's decision; and, relatedly, is a failure to disclose material risks actionable as negligence rather than battery absent proof of no consent or a substantially different procedure?
Q3: What rule did the court apply?
A physician must disclose to the patient all material information necessary to make an informed decision about proposed treatment. Information is material if a reasonable person in what the physician knows or should know to be the patient's position would be likely to attach significance to it in deciding whether to consent. Material information ordinarily includes the nature and purpose of the proposed procedure, the significant risks and their likelihood, available alternatives (including the option of no treatment), and the risks of declining treatment. The duty is not defined by medical profession customs; expert testimony may be used to explain medical risks and probabilities but is not required to establish the legal standard of disclosure. Failure to make adequate disclosure, where it causes injury through the occurrence of an undisclosed material risk, is negligence, not battery, unless the physician performs a procedure without any consent or one substantially different from that authorized. Causation is assessed objectively: the plaintiff must prove that a reasonable person in the patient's position would have declined or chosen differently had adequate disclosure been made. Limited exceptions apply, such as emergencies and a narrowly circumscribed therapeutic privilege when disclosure would pose a serious and immediate threat to the patient's well-being.
Q4: What was the court's holding?
The California Supreme Court adopted a patient-centered materiality standard for informed consent and held that inadequate disclosure is a negligence claim, not battery, when the patient consented to the general procedure. Because the trial court improperly required proof of professional community disclosure standards and directed a verdict against Cobbs for lack of expert testimony on such standards, the judgment was reversed and the matter remanded for proceedings under the correct legal standard.
Q5: Why is Cobbs v. Grant significant?
Cobbs v. Grant is a foundational informed consent case in California and a staple of torts and health law curricula. It modernizes disclosure law by adopting the reasonable-patient materiality standard, clarifies that inadequate disclosure is negligence rather than battery, and sets an objective causation framework. The case also delineates the role of expert testimony and cabins exceptions like therapeutic privilege and emergencies. Together with Canterbury v. Spence and later California cases (e.g., Truman v. Thomas), Cobbs anchors the doctrine that patient autonomy drives the scope of informed consent.