New product development (NPD) has long been regarded as an important issue for the success of business operations. One of the key determinants of NPD is innovation, which is highly related to innovation implementation. Both innovation implementation and NPD success require team sensemaking and trust. The purpose of this study is to examine the antecedents of innovation implementation and its mediating role through which it influences NPD success. A causal model was developed to examine relevant variables for innovation implementation on NPD success. A survey was conducted using the responses from 286 NPD team leaders in the Taiwanese high-tech industry. The results indicated that team sensemaking and trust can influence innovation implementation, which further promotes NPD success. The influences of team sensemaking capability and trust on NPD success can be mediated through the mediating role that innovation implementation plays. This report sheds light on the relevance of innovation implementation in a NPD context.