在分析美國軟體著作權案件的基礎上，本文再進一步探討美國軟體保護課題。作者同意美國法學界多數學者的意見，認為著作權已經過度地被擴張適用到軟體保護之上。本文的觀點，是保護軟體非文字侵害的著作權，實際上擔負著軟體工業界內不正競業法的功能。為了支持筆者這項觀點，筆者將軟體著作權案件分成四組。在每一組案件中，就著作權保護與不正競業法的保護方式作一比較。筆者期望能經由此一比較，顯示出就樹立法徑原則上的考量而言，援用不正競業法規範諸如程式次序，結構及組織等非文字軟體侵害的條件，似乎更為恰當。

　　　　　In this article, I further examine the copyright law aspect of the software protection issues based on the analysis of the software copyright cases. I agree with the majority of the legal scholars that the copyright protection for the computer software has been excessively extended. In this essay, I submit the thesis that the non-literal copyright protection for the computer software has essentially served the function of the unfair competition laws in the software industry. To support my thesis, I categorize software copyright into four groups. A comparison between the copyright protection and the approach based on the unfair competition laws is made in each one of these groups. I believe these comparisons can illustrate my view that the software copyright disputes analyzed in this essay can better be settled based on the unfair competition laws in terms of the construction of the legal rules and principles. This is especially true in cases where copyright protection are extended to the area of non-literal software infringement, like the sequence, structure and organization and the look-and-feel of the computer programs.