Ecological effects of distinct patents on reducing waste-related greenhouse gas emissions in BRIC countries: evidence from novel quantile methods

Technological development and environmental patents have become one of the policy options to solve the problem of global warming. With the development of technology, waste recycling can be faster and more environmentally friendly, which can contribute to the reduction of greenhouse gasses. The question of which patents and technologies should be promoted for waste management is an important decision-making and research topic. Given the increasing importance of ecological patents and waste disposal for environmental sustainability, this study examines the impact of technological progress on reducing waste-related greenhouse gas (WGHG) emissions in BRIC countries. The study considers energy generation and transmission-related patents (EPAT), patents to prevent pollution in the production process of goods (GPAT), and waste management-related patents (WPAT) as technological progress indicators. Methodologically, the study the applies novel quantile-on-quantile regression (QQ), Granger causality-in-quantiles (GQ), and quantile regression (QR) for the period from 1997m5 to 2019m12. The findings demonstrate that at higher quantiles, (i) EPAT have a dampening effect on WGHG in Brazil and India; (ii) GPAT have a diminishing effect on WGHG in Brazil, Russia, and India; (iii) WPAT have a diminishing effect on WGHG in Brazil, Russia, and India. Overall, technological progress contributes to WGHG emissions reduction in Brazil and India, while EPAT is not beneficial for Russia, and China cannot benefit from patents. The results suggest that Brazil, Russia and India should financially support and disseminate distinct patents to reduce WGHG emissions and improve waste management.