It is crucial to assess how technology and innovation management (TIM) scholars use casebased research. Our study provides a theoretical systematic review of qualitative casebased articles published in 31 TIM journals from 2013 to 2018. Our analysis of 311 articles uncovers patterns regarding rigor (including case justification and selection), transparency (including data collection and analytical methods), and paradigmatic consistency and pluralism. Our findings show some evidence of emerging pluralism in how TIM researchers perform qualitative case studies, but also highlight some worrying trends: paradigmatic inconsistencies, lack of transparency, and over-reliance on specific approaches, all of which affect the value of case study research. We provide methodological guidelines for improving the use of qualitative case research in TIM. 2009), and thereby constrain novel approaches that could advance the field (Bluhm et al., 2011;Bansal and Corley, 2012). For example, Van de Ven and Poole (2005) note that variance methods, which imply a positivistic view of organizations, have been Are rigor and transparency enough? R&D Management 50, 3, 2020 311Are rigor and transparency enough? R&D Management 50, 3, 2020 323 study practices can seriously hinder the progress of our field (see Pratt et al., 2019).