Adopting digital product passports (DPPs) poses technical and organisational challenges. This paper outlines a research agenda co-developed with seven industry partners, three manufacturers and four digital/consultancy companies in the construction sector, as part of a 3.5-year project investigating how DPPs can support circular economy practices in real industrial settings. Drawing on a scoping literature review, interviews, and participatory goal- and problem-modelling workshops, the paper outlines current practices and emerging needs related to DPP adoption. The research agenda highlights three focus areas. First, it emphasises the importance of the product use and end-of-life phase, where real-time data can provide valuable insights into product performance, usage patterns, and environmental impact. These insights can inform decisions related to maintenance, reuse, and recycling. Second, it addresses the need for a cybersecurity-centred enterprise architecture and infrastructures that enable trusted and secure sharing of lifecycle data across organisational boundaries. Third, the agenda explores how DPP data can be used proactively to support sustainable product realisation. Taking a sociotechnical perspective, the initial findings reveal both challenges and emerging needs with respect to the DPPs adoption.