After the case is over, client sues for a fee refund. There is a duty to provide the client with sufficient information to justify the bill. Fonte holds that there is a duty to turn over time, billing and accounting documents, in order to justify the charges. After the case is over, there is no apparent dispute. Yes, but carefully.
People bring post-trial motions.
Notes on donative intent are relevant only after the testator dies. A new rule of law may support a writ of coram nobis many years from now. The duty does not magically end when the case ends. Some papers cannot be destroyed. Some papers have a predictable life longer than five to 10 years, such as patents, long-term contracts, documents showing paternity, tax basis of purchases, wills.