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Phillips v. AWH: Practical Pointers on the Use of Intrinsic and Extrinsic Evidence
The Federal Circuit's en banc decision in Phillips v. AWH Corp., 415 F.3d 1303 (Fed. Cir. 2005), provides a reminder, for patent prosecution attorneys and patent litigators alike, of the types of evidence that can be used to support a patent claim construction. In short, intrinsic evidence ' namely, the claim language, specification and prosecution history ' remains the primary source materials for interpreting patent claims. On the other hand, extrinsic evidence ' namely, dictionaries, treatises and expert testimony ' may not have the same persuasive status previously accorded by the Federal Circuit's decision in Texas Digital Sys., Inc. v. Telegenix, Inc., 308 F.3d 1193 (Fed. Cir. 2002). Nonetheless, extrinsic evidence retains its role in helping to explain the meaning of claim terms as understood by a person of ordinary skill in the art. Extrinsic evidence also can be useful to explain the “context” of the invention that informs any claim construction.
Thus, patent drafters should draft applications that include the intrinsic evidence needed to fully describe the invention. Similarly, patent litigators should carefully review the intrinsic evidence to determine its scope, as well as carefully select any extrinsic evidence to ensure that a court will consider it in determining the proper meaning of a claim term.
Why So Many Great Lawyers Stink at Business Development and What Law Firms Are Doing About It
Why is it that those who are best skilled at advocating for others are ill-equipped at advocating for their own skills and what to do about it?
Bankruptcy Sales: Finding a Diamond In the Rough
There is no efficient market for the sale of bankruptcy assets. Inefficient markets yield a transactional drag, potentially dampening the ability of debtors and trustees to maximize value for creditors. This article identifies ways in which investors may more easily discover bankruptcy asset sales.
A Lawyer's System for Active Reading
Active reading comprises many daily tasks lawyers engage in, including highlighting, annotating, note taking, comparing and searching texts. It demands more than flipping or turning pages.
The DOJ's Corporate Enforcement Policy: One Year Later
The DOJ's Criminal Division issued three declinations since the issuance of the revised CEP a year ago. Review of these cases gives insight into DOJ's implementation of the new policy in practice.
Blockchain Domains: New Developments for Brand Owners
Blockchain domain names offer decentralized alternatives to traditional DNS-based domain names, promising enhanced security, privacy and censorship resistance. However, these benefits come with significant challenges, particularly for brand owners seeking to protect their trademarks in these new digital spaces.