Final answer:
The truthfulness of the statement about Riverbed Corporation purchasing a patent from Cullember Company cannot be determined without additional information. A patent acquisition is a process by which one company buys a patent from another to gain exclusive rights to an invention.
Step-by-step explanation:
The statement "Riverbed Corporation purchases a patent from Cullember Company" cannot be confirmed as true or false without additional context or verification from reliable sources. A patent acquisition is a business transaction where one company buys the rights to a patent from another company. If Riverbed Corporation did indeed purchase a patent from Cullember Company, this would mean that Riverbed has acquired the right to exclude others from making, using, or selling an invention that is the subject of the patent for a certain period of time. Such transactions are common in business, particularly in industries where technology and innovation are key competitive factors.