本文还从技术牵引、“反公地悲剧”、全球竞争等三个方面论证了对虚拟财产进行保护的客观理由；
And then this article argues the external reasons of virtual property being protected through three aspects including technique-leading, "the tragedy of anticommons", world-wide competition.
当专利权人行使排他权时，后续研发工作就难以进行，从而造成对专利成果利用不足和上游基础研究被闲置的反公地悲剧。
When patent holders exercise their exclusive rights or do not offer their permission subsequent researches can hardly proceed, thus leading to resource underuse, a tragedy of anticommons.
当专利权人行使排他权时，后续研发工作就难以进行，从而造成对专利成果利用不足和上游基础研究被闲置的反公地悲剧。
When patent holders exercise their exclusive rights or do not offer their permission subsequent researches can hardly proceed, thus leading to resource underuse, a tragedy of anticommons.
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