SW Enterprises v. Southtrust Bank of Alabama

Holding that Rule 16(b) governs leave to amend after a scheduling order deadline has expired and requires movant to demonstrate “good cause” before addressing the issue under the more liberal standard of Rule 15

O2 Micro Intern. v. Monolithic Power Sys

Holding that diligence must be considered in determining whether good cause exists to amend infringement contentions

In re Katz Interactive Call Proc. Patent

Holding that it is "not necessary to disclose more structure than the general purpose processor that performs those functions" because such functions are "coextensive with the structure disclosed."

Reliance Insurance v. The Louisiana Land & Exploration Co.

Finding no abuse of discretion when the plaintiff “offered no justification for its delay”

Computer Acceleration Corp. v. Microsoft Corp.

Holding the differences between the two classes of products for which plaintiff attempts to rely on one infringement chart "weighs heavily in favor of striking the infringement contentions" against the product for which no chart is offered

Masimo Corp. v. Philips Elecs. N. Am. Corp.

Rejecting argument that In re Katz recognized duplication as the only ground supporting narrowing of claims

RichTek Tech. Corp. v. UPI Semiconductor Corp.

CyWee Grp. Ltd. v. Apple Inc.

Denying a patentee's motion to amend where the allegedly "new" information was in the patentee's possession for years; while the information "may have been difficult to find—obscured by language barriers and placed at a remove by geography," the court was not "persuaded that these challenges could not have been overcome by a diligent search at or before the outset of this litigation"

Veolia Water Solutions & Techs. N. Am., Inc. v. Aquatech Int'l Corp.

Finding bad faith sufficiently alleged where company "conducted no investigation, analysis, or review prior to sending" demand letter and emails showed knowledge that process could not infringe subject patent

Power Integrations, Inc. v. Fairchild Semiconductor International, Inc.

Finding two-month delay without any reasonable basis not diligent

Rule 16 - Pretrial Conferences; Scheduling; Management

Adopting the sanctions authorized by Rule 37(b)

Rule 1 - Scope and Purpose

Recognizing the federal rules of civil procedure should be employed to promote the "just, speedy, and inexpensive determination of every action and proceeding"