Cantor Colburn LLP is a full service IP law firm with expertise in additive manufacturing. They have established an additive manufacturing practice group and are ranked #10 nationally for issued patents. The firm works with an international network of associates. In 2013, the United States and China drove growth in international patent filings under the Patent Cooperation Treaty, with the US exceeding its 2007 filing levels. 3D printing presents unique intellectual property challenges regarding the rights to use, make, and sell 3D printed objects. There are various forms of IP protection such as patents, copyrights, trademarks, and trade secrets that can apply depending on the situation.