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    Title: Definite Indefiniteness of "Molecular Weight" as a Claim Term for Polymer-Related Patents
    Authors: 陳秉訓
    Chen, Ping-Hsun
    Contributors: 科管智財所
    Date: 2018-03
    Issue Date: 2018-10-09 11:49:30 (UTC+8)
    Abstract: The molecular weight of a polymer is not just a number for a single molecule. In fact, molecular weight measurement is based on a large volume of molecules of the same polymer. Due to the non-uniformity of molecular weights, there are several methods to measure an “average molecular weight” of a polymer. Unfortunately, the Federal Circuit in Teva Pharms. USA, Inc. v. Sandoz, Inc., 789 F.3d 1335 (Fed. Cir. 2015), held that the term “molecular weight” in several polymer claims was indefinite, because the term could mean either peak average molecular weight, number average molecular weight, or weight average molecular weight. This paper analyzes the claim construction and indefiniteness determination in Teva to illustrate the flaws of the patentee’s specification. This paper also proposes practical solutions for patent drafting to avoid indefiniteness issues.
    Relation: Journal of Business, Entrepreneurship and the Law, Vol.11, No.1, pp.207-232
    Data Type: article
    Appears in Collections:[科技管理與智慧財產研究所] 期刊論文

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