Barriers to trade in EGS may also be created where specific patented or patentable technical knowledge is adopted as a standard for an industry through governmental regulation, standards or special provisions in MEAs.
通过政府规则、标准或多边环境协定的具体规定，将具体的专利或可获得专利的技术知识作为行业标准，也可能形成环境商品和服务的贸易壁垒。