同不同意Claim中加入「量」的限制？
同不同意Claim中加入「量」的限制，包括尺寸、溫度、比較等？
主觀上，可能加入這些「量」的限制的權利範圍就是表達此範圍與習知技術「差異不大」？
而這些限制也是有字意解釋上的問題，比如，權利範圍包括酸鹼值6，是否有包括5或是5.8，答案是「沒有」，因為字意（literally）上不滿足！
卻可以在PH 6之前加入一些模糊的形容詞或副詞，如substantially, approximately
可以定義出兩個或是以上的限制的字則不是模糊的字，如：at least, at most, more than, less than, over, under等，因為這些字眼有限定「邊界」，但是也可因為套上模糊的描述，變成模糊的邊界，也就是這些word of approximation與non-word of approximation也可組合，如substantially at least...
有些看似能讓權利範圍較廣的字眼，其實都可能導致不明確的問題，所以原則上，以上的模糊字眼都應該在說明書內文說明清楚，或是讓熟悉該項技術者能夠明白，使用上才不會有問題
雖然難以想像substantially與at least的結合要如何解釋，仍可由範例來想像
舉個例子：
US7,463,157
16. Method according to claim 14, wherein detecting the head movement reaction includes at least one of the following measures and evaluations: pre-defining a threshold value for the disturbance signal and evaluating head movement reactions if the disturbance exceeds the threshold value; evaluating head movements if the vehicle is travelling substantially in a straight direction for substantially at least one of a predefined period of time and above a predefined speed threshold value; and ignoring head movements if the vehicle is not travelling substantially in a straight direction for substantially the at least one of the predefined period of time and at above the predefined speed threshold value.
參考資料：Landis on Mechanics of Patent Claim Drafting
Ron
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