or negligent conduct. Although expert opinions are not inadmissible merely because they “embrace” ultimate issues to be decided by the trier of fact, Fed.R.Evid. 704, legal conclusions or statements of advocacy do not assist the factfinder. Snap-Drape, Inc. v. Comm’r of Internal Revenue, 98 F.3d 194, 197-98 (5th Cir.1996). Despite its permissive language, Rule 704 “does not allow an expert to render conclusions of law.” Id. Most of Martin’s report is inadmissible on this basis. To the extent Martin’s report addresses contract interpretation, it is inadmissible. Expert testimony on the proper interpretation of contract terms may be admissible when the meaning depends on trade or industry practice. See, e.g., Kona Tech. Corp. v. S. Pac. Transp. Co., 225 F.3d 595, 611 (5th Cir.2000) (<HOLDING>). But such expert testimony is admissible only
holding that the industry norm was established by expert who presented percentages of the industry making late payments holding the district court properly admitted expert testimony on defendants active gang membership holding that the district court properly admitted expert testimony under daubert that was based on inter alia the doctors clinical experience and review of the medical records holding improperly admitted testimony was cumulative to the other properly admitted evidence and was therefore harmless holding that the district court properly admitted expert testimony to interpret contract provisions having a specialized meaning in the railroad industry