This dataset contains survey data collected as part of a research project on inter-organisational technology transfer and sustainability performance. A total of 459 valid responses were gathered from firms across multiple countries, with data provided in both German and English. The dataset records respondent and organisational characteristics, including language, job position, industry, work experience, headquarters location, firm type, firm size, corporate affiliation, geographical sales market, and state support. It also captures information on technology transfer partners and types, along with responses to measurement items used in the research model. Data were collected using a structured online questionnaire designed to measure factors relevant to technology transfer and sustainability outcomes. The survey instrument included both categorical and scaled items. Responses were anonymised prior to archiving.