This study aims at describing and analyzing the network formation of technological innovation. Studying this research phenomenon as processes generally and as sociomaterial processes specifically calls for a holistic and process driven research approach. This approach is captured by adopting material constructionist research philosophy and consequently materially relativist style of thinking as well as the basic ideology of case study research. These research philosophical stances give an opportunity for me to become sensitized to materiality, process, conflicts, and interests when scrutinizing the network formation of technological innovation. The study is situated in the context of construction; I draw analytical insights from many sources and use these in describing and analyzing the network formation of technological innovation. These sources include the network studies in business context – business networks, social networks and entrepreneurial networks – as well as actor-network theory and the empirical case called the intelligent paper in the study period of 13 years, thus from 1997 to 2009. The intelligent paper is a technological innovation and a network as I regard it in this study. It concerns cost-effective, high-volume and roll-to-roll production of printable optics and electronics which enables novel, intelligent functionalities onto printed matter. It is part of the emerging printed intelligence markets, which is located at the crossroads of several industries, namely paper and printing, optics, and electronics. I identify two ways to describe and analyze the network formation of technological innovation, namely the concepts of network trajectory and translation. The first is the concept of network trajectory. It enables capturing simultaneously a network, that is, actors and their relationships and a path of movement of this network across space and time. From the previous network studies in business context, I identify three network trajectories: the goal-based, opportunity-based and integrated network trajectories. The contemplation of these trajectories leads to three shortcomings of this view: (1) heavy emphasis has been put on humans and their relationships as principal carriers of technological innovation activities, (2) non-humans and their relationships have only been treated as instruments in these activities, and (3) the human parties have rather deterministically and linearly been seen to influence and be influenced by the networks within which they are embedded while engaging in technological innovation activities. These shortcomings are transcended in this study by introducing actor-network theory and adopting the concept of translation. The concept of translation shifts the focus onto sociomateriality involved in the network formation of technological innovation. It allows detecting the network formation of technological innovation as continually unfolding sociomaterial processes during which some actors – by becoming involved in network formation/technological innovation and chained together in a logical succession – succeed in pursuing a character while others remain objects of other actors’ actions. At the same time, the underlying power relationships between them become revealed. In the empirical part of the study, I discuss the case of the intelligent paper using heuristically Callon’s (1986a) four-phase translation model. Additionally, I complement the model with introducing certain relational and somewhat metaphorical words (i.e., pack and filtering). As a result, I narrate the network formation of technological innovation. This narration provides a multifaceted and empirically grounded understanding of the network formation of technological …