Mark Lanier, the 47-year-old attorney who litigated his way to CNBC fame by taking on Merck’s dreaded Vioxx, and who’s now representing sugar-cane farmers in their suit against Splenda, is doubling the size of his footprint in Harry Macklowe’s Tower 56.

Mr. Lanier’s firm, the Lanier Law Firm, just signed a 10-year lease renewal Read More