Corvest SPV, a Largo-based, national provider of advertising and promotional products, plans to lay off 201 employees by April. The company, founded in 1996, reported its layoffs on the state's WARN (Worker Adjustment and Retraining Notification) list of larger-scale job cuts that are required to be disclosed by the state. Corvest owns three operating units: Adva-Lite (flashlights, writing instruments, drinkware and tools), Toppers (bags, totes, headwear, outdoor products) and It's All Greek To Me (plush products for college campus bookstores, games and novelty items). The company in 2007 sought Chapter 11 bankruptcy reorganization. Its offices at 8285 Bryan Dairy Road are in the former headquarters of the Eckerd drugstore chain. Last summer, Corvest reported it employed more than 300 in a new, 300,000-square-foot facility. The company could not be reached for comment.