
The Cobbs v. Grant case of 1972 is a landmark decision by the Supreme Court of California that established the duty of physicians to obtain informed consent from their patients. The case involved Ralph Cobbs, the plaintiff, suing Dudley F. P. Grant, the defendant and a medical doctor, for medical malpractice. Cobbs alleged that Grant failed to inform him of the risks associated with an operation to remove stomach ulcers, which resulted in unexpected complications and additional surgeries. The court's decision affirmed the principle that patients have the right to make informed decisions about their medical treatment and that physicians have a legal obligation to disclose relevant information, including the risks and potential complications of a procedure. The case set a precedent for the standard of care and informed consent in medical practice, with the court stating that a physician's duty to disclose is not governed by standard practice but is a legal obligation.
| Characteristics | Values |
|---|---|
| Date | October 27, 1972 |
| Court | Supreme Court of California |
| Plaintiff | Ralph Cobbs |
| Defendant | Dudley F. P. Grant |
| Case Type | Medical Malpractice |
| Issue | Defendant's duty to inform the plaintiff of the risks of surgery |
| Holding | The defendant is liable if they withhold facts necessary for the plaintiff's intelligent consent to treatment |
| Citation | 502 P.2d 1 Cal. 1972 |
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What You'll Learn

A physician's duty to disclose information
The case of Cobbs v Grant (1972) is an important illustration of a physician's duty to disclose information. The case involved a patient, Cobbs, who underwent surgery to remove a stomach ulcer. During the procedure, the surgeon, Dr. Grant, performed two additional surgeries: one to remove an additional ulcer and another to remove Cobbs' spleen.
Cobbs sued Dr. Grant for medical malpractice, arguing that he was not properly informed of the risks associated with the operation. The trial court framed the case in terms of technical battery, and the jury found in favour of Cobbs. Dr. Grant appealed the decision.
The California Supreme Court, in its decision, outlined several key principles regarding a physician's duty to disclose information. Firstly, it acknowledged that patients generally lack medical knowledge and rely on their doctors for information. Secondly, it affirmed that adults of sound mind have the right to decide whether to undergo medical treatment. Thirdly, the court emphasised that for consent to be effective, it must be informed consent. Finally, the court recognised the patient's dependence on the physician for information during the decision-making process, creating an obligation for the physician to disclose all relevant information.
The court held that a physician's duty to disclose is not governed by standard practice in the medical community but is instead imposed by law. Physicians must provide information that is necessary for patients to make intelligent consent to proposed treatments. This includes disclosing the potential risks of death or serious harm and explaining complications in layman's terms. However, physicians are not expected to provide excessive detail or discuss minor risks that are common knowledge.
In summary, the Cobbs v Grant case highlights the legal obligation of physicians to provide patients with sufficient information to make informed decisions about their medical treatment. This duty transcends community standards and is based on the understanding that patients depend on their physicians for critical information to protect their right to make choices about their own bodies.
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Patient's right to control their body
In the case of Cobbs v. Grant, the California Supreme Court held that a physician has a duty to disclose to a patient the available choices with respect to proposed therapy and the dangers inherently and potentially involved in each. The case established that a patient has the right to control their body and make decisions about their medical treatment.
The case of Cobbs v. Grant centred around the concept of informed consent and the duty of a physician to provide sufficient information for a patient to make an informed decision about their treatment. The plaintiff, Ralph Cobbs, sued Dr. Dudley F. P. Grant for medical malpractice. Dr. Grant had informed Mr. Cobbs that he needed surgery to treat a stomach ulcer but failed to disclose the risks associated with the procedure, including the potential for spleen injuries and subsequent ulcers. As a result of the surgery, Mr. Cobbs underwent two additional surgeries, one to remove his spleen and another to remove part of his stomach due to an additional ulcer.
The California Supreme Court, in its decision, outlined several postulates that underpin the concept of informed consent. Firstly, it acknowledged that patients generally lack medical knowledge and rely on their doctors for information. This creates an information asymmetry between patients and physicians, which courts must consider. Secondly, the court affirmed that an adult of sound mind has the right to control their body and decide whether to undergo medical treatment. This right to self-decision is fundamental to the patient-physician relationship. Thirdly, the court emphasised that a patient's consent to treatment must be informed consent. This means that patients must have all the relevant information about the risks and alternatives to make an intelligent choice. Finally, the court recognised the position of trust that physicians hold, and the obligation this creates to provide honest and complete information to patients.
The court's decision in Cobbs v. Grant set a precedent for the standard of care required by physicians in obtaining informed consent from their patients. It established that the scope of a physician's duty to disclose is measured by the amount of knowledge a patient needs to make an informed decision. At a minimum, physicians must disclose the potential for death or serious harm and explain the possible complications in understandable terms. Additionally, doctors must provide any other information that a skilled practitioner of good standing would typically provide under similar circumstances.
The case of Cobbs v. Grant highlights the importance of respecting patients' rights to control their bodies and make informed decisions about their medical care. It underscores the obligation of physicians to provide honest and complete information, ensuring that patients can knowledgeably consent to or refuse treatment. This case has had a significant impact on medical law and the standard of care expected of physicians in their interactions with patients.
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Patient's consent to treatment
The case of Cobbs v Grant (1972) is an important illustration of the application of negligence theory and the duty of physicians to obtain informed consent from their patients. The case revolves around the plaintiff, Ralph Cobbs, suing Dr. Dudley F. P. Grant for medical malpractice.
The facts of the case are as follows: Cobbs was admitted to the hospital in August 1964 for the treatment of a duodenal ulcer. After a series of tests, Dr. Grant informed Cobbs that he needed to undergo surgery. While Dr. Grant discussed the nature of the surgery, he failed to disclose the risks associated with it, including potential spleen injuries and subsequent ulcers. As a result of the surgery, Cobbs had to undergo two additional surgeries: one to remove his spleen and another to remove part of his stomach due to an additional ulcer.
The central issue in the case was whether Dr. Grant had obtained informed consent from Cobbs before the surgery. The court held that a physician's duty to disclose information is not governed by standard practice in the community but is a duty imposed by law. This means that a doctor must reveal any information that any other medical professional in good standing would disclose under similar circumstances. In this case, Dr. Grant did not inform Cobbs about the inherent risks of the surgery, which constituted a breach of his duty to obtain informed consent.
The court's decision in Cobbs v Grant sets a precedent for the standard of care required in obtaining patient consent. It establishes that patients have the right to determine whether to submit to medical treatment and that this consent must be informed. This means that physicians have a legal obligation to provide their patients with all relevant information to make an informed decision about their treatment options. The case highlights the importance of transparency and patient autonomy in the doctor-patient relationship.
In conclusion, the Cobbs v Grant case underscores the legal requirement for physicians to obtain informed consent from their patients before proceeding with any medical treatment. This precedent-setting decision has significant implications for medical practice and patient rights, emphasizing the need for full disclosure of relevant information to patients to make informed decisions about their healthcare.
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Physician's liability
In the case of Cobbs v. Grant, the California Supreme Court held that a physician has a duty to disclose to a patient the available choices with respect to a proposed treatment, as well as the dangers inherently and potentially involved in each. This is to ensure that the patient's consent to treatment is informed. The court's decision in this case has set a precedent for physicians' liability in situations where they fail to obtain informed consent from their patients.
The case of Cobbs v. Grant involved a medical malpractice suit brought by Ralph Cobbs against his surgeon, Dr. Dudley F. P. Grant. Dr. Grant had recommended surgery to treat Cobbs' stomach ulcer and had explained the nature of the operation to him. However, he failed to disclose any of the risks associated with the surgery, including the possibility of spleen injuries and subsequent ulcers. As a result of the surgery, Cobbs had to undergo two additional surgeries, one to remove his spleen and another to remove a portion of his stomach due to an additional ulcer.
Cobbs sued Dr. Grant for medical malpractice, arguing that the doctor had a duty to inform him of the risks associated with the surgery. The jury found in favor of Cobbs, and the case was appealed by Dr. Grant. The California Supreme Court upheld the jury's decision and clarified the scope of a physician's duty to disclose information to their patients.
The court held that a physician's duty to disclose is not governed by standard practice in the community but is rather a duty imposed by law. This means that a physician cannot rely on the fact that other doctors in the community may not disclose certain information to their patients. Instead, a physician must provide their patient with all the information that a skilled practitioner of good standing would typically provide under similar circumstances. This includes disclosing the potential for death or serious harm, as well as any known complications that might occur during the procedure.
The court's decision in Cobbs v. Grant has important implications for physicians' liability. It establishes that physicians have a legal obligation to obtain informed consent from their patients by providing them with all the relevant information about the proposed treatment, including any inherent risks. Failure to do so may result in legal consequences, as demonstrated by the Cobbs v. Grant case. This case highlights the importance of physicians prioritizing patient autonomy and ensuring that patients have all the necessary information to make informed decisions about their own medical treatment.
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Standard of care
In the case of Cobbs v. Grant, the standard of care was a central issue that helped define the duty of a physician to disclose information to a patient. The case involved Ralph Cobbs, the plaintiff, suing Dudley F. P. Grant, the defendant and a medical doctor, for medical malpractice.
Cobbs had undergone surgery performed by Dr. Grant to remove a stomach ulcer. During the surgery, Dr. Grant performed two additional procedures: one to remove an additional ulcer and another to remove Cobbs's spleen. These complications were not discussed with Cobbs prior to the surgery, and as a result, he suffered spleen injuries and subsequent ulcers.
The standard of care in this context pertains to the duty of a physician to disclose pertinent information to a patient before obtaining their consent for a medical procedure. The court in Cobbs v. Grant outlined several postulates that underpin this duty:
- Patients generally lack medical knowledge and, therefore, rely on their physicians for information.
- An adult of sound mind has the right to decide whether to undergo medical treatment.
- A patient's consent to treatment must be informed, based on full disclosure of relevant information.
- The patient-physician relationship involves an obligation for the physician to transcend arms-length transactions and provide all information necessary for the patient's decision-making process.
The court held that a physician has a duty to disclose "the available choices with respect to proposed therapy and ... the dangers inherently and potentially involved in each." The scope of this duty is determined by the amount of knowledge required for a patient to make an informed choice. At a minimum, physicians must disclose the potential for death or serious harm and explain, in layperson's terms, possible complications.
The standard of care in Cobbs v. Grant sets a precedent for informed consent in medical practice, emphasising the importance of physicians providing patients with comprehensive information about the risks and alternatives associated with proposed treatments.
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Frequently asked questions
The case revolves around Ralph Cobbs suing Dudley F. P. Grant for medical malpractice.
Cobbs was informed by Grant that he needed to undergo surgery to remove a stomach ulcer. However, Grant failed to inform Cobbs about the risks associated with the surgery, including spleen injuries and additional ulcers. As a result, Cobbs had to undergo two additional surgeries, one to remove his spleen and another to remove part of his stomach.
The jury found in favour of Cobbs, and the case established the importance of informed consent in medical treatment. The court held that a physician has a duty to disclose the risks of a medical procedure and cannot withhold information that is necessary for a patient to make an informed decision.
The case established a precedent for informed consent in medical treatment, where physicians are required to provide patients with all relevant information about the risks and potential complications of a medical procedure. This case highlighted the power imbalance between patients and physicians due to the patients' lack of medical knowledge.
No, the case law established in Cobbs v. Grant specifically pertains to California state law. However, other states, such as New Mexico, have also adopted requirements for full disclosure by physicians.









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