RT Journal Article T1 Licensing of a new technology by an outside and uninformed licensor A1 Antelo Suárez, Manel A1 Rodríguez Sampayo, Antonio K1 New technology  K1 Exclusive and non-exclusive licensing  K1 Asymmetric information  K1 Screening  K1 Per-unit royalty  K1 Ad-valorem royalty  K1 Welfare AB We examine the licensing decision of a non-producer innovator with a new technology that enables the manufacture of a saleable product. The technology is licensed and each user privately knows its innovation-related production cost, whereas the licensor only knows, with a certain probability, that this cost may be low (the user is efficient) or high (the user is inefficient). When a single licence is granted through separating contracts, only the contract intended for the inefficient user involves a per-unit royalty, but when two licences are granted through separating contracts, the contracts intended for the inefficient and efficient users both feature a per-unit royalty. However, screening is less likely as the number of licences increases, to the point that the licensor does not screen users when granting three licences. Additionally, whereas the diffusion of the innovation is socially insufficient under symmetric information, with asymmetric information it may be socially optimal. Finally, when licensing with contracts involving an ad-valorem royalty is also feasible the licensor finds it less attractive than licensing with a per-unit royalty PB Springer SN 0931-8658 YR 2024 FD 2024 LK http://hdl.handle.net/10347/33800 UL http://hdl.handle.net/10347/33800 LA eng NO Antelo, M., Sampayo, A. Licensing of a new technology by an outside and uninformed licensor. J Econ (2024). https://doi.org/10.1007/s00712-024-00860-3 NO Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. The authors acknowledge financial aid from Consellería de Cultura, Educación, Formación Profesional e Universidades (Xunta de Galicia) through Grant Consolidación e estruturación – 2023 GRC GI-2016 Análise económica dos mercados e institucións (AEMI). The second author also thanks financial support from the Spanish Ministry of Science and Innovation research project PID2020-118119 GB-I00. They declare that these institutions do not gain or lose financially through publication of this paper DS Minerva RD 24 abr 2026