The doctrine of non-derogation from grants is a principle of the law of England and Wales.
As the House of Lords explained in British Leyland Motor Corp v Armstrong Patents Co, it states that a seller of realty or goods is not permitted to take any action (such as bringing an infringement action) that will lessen the value to the buyer of the thing sold.
[1] A similar effect has also been realised in United States patent law under the doctrine of repair and reconstruction.
In contrast, the other doctrines may be vulnerable to contractual disclaimers or evidence of intent not to grant intellectual property rights.
The issue is discussed to some extent in the courts' opinions in British Leyland and Quanta Computer, Inc. v. LG Electronics, Inc.