"previous consent" is correct and can be used in written English.
You can use it to indicate consent that has already been obtained or given in the past. For example, "We will proceed with the project only if there is previous consent from all stakeholders."
No descendant of his late Majesty, [King George II] (other than the issue of princesses married, or who may marry into foreign families) shall be capable of contracting matrimony without the previous consent of his Majesty, his heirs, &c.
The liabilities incurred by way of contract are more or less expressly fixed by the agreement of the parties concerned, but those arising from a tort are independent of any previous consent of the wrong-doer to bear the loss occasioned by his act...
The previous consent of the parties is necessary.
Longer review articles must be submitted with previous consent from the Editor-in-Chief, but this is not necessary for shorter reviews.
Mr. Spaight: He objects to giving the government exclusive legislation in a district not exceeding ten miles square, although the previous consent and cession of the state within which it may be, is required.
Previous consent is not sufficient, and people who are physically helpless, mentally incapacitated or asleep are considered unable to consent at all.
To evaluate the usefulness of the loci included in PP17 we analyzed 150 unrelated individuals' samples obtained with previous informed consent, who attend to paternity testing.
For example, Ms. Heiberger said, most leases state that a tenant cannot make alterations without the owner's previous written consent.
Further, each party undertakes not to disclose to any person, without the previous written consent of the other party, the existence of any term of this Agreement, or the existence of any information about any dispute or disagreement between the parties.
Previous informed consent, we collected demographics data, baseline functional status (Barthel scale), mortality intraUCI, at hospital and one-year of hospital discharge.
"If an individual's death occurs after the effective date of this Act, a person may not use that individual's identity for commercial purposes for 50 years after the date of the individual's death without having obtained previous written consent from the appropriate person.
