Dale Chang

Russ August & Kabat

General

Experience19 yrs

Elite Ratings

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Practice Areas

Mech Eng, Manuf (5 cases)

Transport., E-Comm. (95 cases)

Semicond., Optic (22 cases)

Communications (11 cases)

Software, Security (86 cases)

Law Firms

Russ August & Kabat (Current)

Latham & Watkins LLP

dchang@raklaw.com

Ratings

Experience

Grade

Trend

DCT

L5

C

PTAB

L3

A

CAFC

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Cases

Case #	Court	Caption	Filed	Represent
2:26-CV-00304	E.D. TX	Headwater Research LLC v. Amazon.com Services LLC	04/16/26	Patent Owner :Headwater Research LLC	.
3:26-CV-01460	N.D. CA	Headwater Research LLC v. Google LLC	02/26/26	Patent Owner :Headwater Research LLC	.
5:26-CV-01545	N.D. CA	Headwater Research LLC v. Google LLC	02/23/26	Patent Owner :Headwater Research LLC	.
7:25-CV-00532	W.D. TX	Optimnet LLC v. Amazon.com Services LLC	11/17/25	Patent Owner :Optimnet LLC	.
7:25-CV-00518	W.D. TX	Headwater Research LLC v. Google LLC	11/07/25	Patent Owner :Headwater Research LLC	.
3:25-CV-08631	N.D. CA	Resonac Hard Disk Corp v. Mr Tech GmbH	10/09/25	Patent Owner :Mr Technologies GmbH	.
2:25-CV-00961	E.D. TX	Headwater Research LLC v. Walmart Inc	09/18/25	Patent Owner :Headwater Research LLC	.
7:25-CV-00415	W.D. TX	HFT Solutions LLC v. Optiver US LLC	09/08/25	Patent Owner :HFT Solutions LLC	.
7:25-CV-00407	W.D. TX	Headwater Research LLC v. Apple Inc	09/04/25	Patent Owner :Headwater Research LLC	.
2:25-CV-00935	E.D. TX	Optimnet LLC v. Cisco Systems Inc	09/04/25	Patent Owner :Optimnet LLC	.

Ratings Trends

Practice Areas