[Purposes]This paper provides suggestions for the relevant legislation,and provides a basis for the rights holders to seek relief in the future.[Methods]Through literature search,the problems exist-ing in 3D printing copyright are summarized and analyzed.[Findings]The problems with 3D printing are centered on originality,variety of work,and heterogeneous reproduction.[Conclusions]The originality of 3D printing should be judged by combining"strong and weak"and"yes and no".It is most appropriate to protect CAD files by 3D printing as model works.The issue of heterogeneous copying can be clarified in the legislation by referring to extra-territorial regulations.
3D printingcopyrightoriginalityheterogeneous replication
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