Goof (plot holes): The defense team is very concerned that a juror is funneling information about how the jury is leaning to an outside source but not at all concerned that the jury is discussing the case before it is sent to it for deliberation, a serious breach of trial rules.
Goof (continuity error): Big Mac's twin brother in the pool with Jennifer, at the same time another Big Mac was talking with Bash.
Goof (errors made by characters, possibly deliberate errors by the filmmakers): Leonard Franklin repeatedly misuses "Executor" to describe his role in the probate of the intestate estate of Duncan Morrow. When someone dies without a will, the person who is responsible for settling the decedent's probate is referred to as the "Administrator."
Goof (factual errors): The character Leonard Franklin refers to Robert's Rules of Courtroom Decorum. There is no such document. Courts are governed by Rules of Criminal (or Civil, as applicable) Procedure.
Goof (errors made by characters, possibly deliberate errors by the filmmakers): The character Pindar Singh says a computer file was replicated across numerous server directories and networks because of a "cyclic redundancy check." A cyclic redundancy check is used to verify error-free data.
Goof (factual errors): While arguing that a murder defendant had the right to face his accuser in the morgue, Franklin and Bash invoked The Constitution and cited Thomas Jefferson as its author. In a room full of lawyers, no one pointed out that the author of The Constitution was actually James Madison.
Goof (factual errors): During the beer trial, Franklin pours a glass of beer that is almost full with about an inch of a foam head. However, only seconds later when the camera angle changes, the glass is only half full of beer with a half a glass of foam head.
Goof (plot holes): It is stated that the judge had a porn movie charged to his hotel room by the name of Real Steel starring Huge Jackman on February 19, 2009. All porn movies based on major motion pictures come out after the films on which they are based. The movie Real Steel starring Hugh Jackman was not released until October 7, 2011 or more that 2 and a half years after the porn knockoff would have been made.