The firm is nominated in three of the four categories for Chile: Trade Mark, Patents and Anti-counterfeiting. The awards ceremony will take place on March 15 in New York, according to its web: http://www.managingip.com/Article/3785644/Awards/Managing-IP-Americas-Awards-2018-shortlists-announced.html.
On the other hand, the Managing Intellectual Property has published the rankings of the Chilean firms featured in Trade Mark Contentious and in Trade Mark Prosecution. In both, Villaseca Abogados is part of Tier 2. The full list can be found here: https://www.ipstars.com/countries/chile/cl#/rankings.