商业利用侵权的抗辩事由为合理使用、权利用尽、善意侵权和非自愿许可。

The defenses of infringements of commercial-type use include fair use, exhaustion of rights, infringement of goodwill, non-voluntary license.

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在本文中笔者详细论述了“非自愿许可”制度的几种详细情形，具体为法定许可制度、强制许可制度以及合理使用制度。

In this paper, certain types of 'unauthorized license' system are expounded in detail: statutory license system, compulsory license system, and fair use.

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