Golden Bridge Technology, Inc. v. Apple Inc., 937 F. Supp. 2d 504

Background

GBT sued Apple and several AT&T entities and Motorola for infringement of the '267 and '427 patents, as reexamined, with related litigation consolidated elsewhere and mediation leading to consolidation and stay of non-Apple claims.
The patents-in-suit cover a RACH ramp-up method for CDMA systems to provide reliable high data throughput with low delay, using increasing preambles until detected by a base station.
The accused products include multiple Apple devices (iPhone 3G/3GS/4/4S and iPad lines) and relate to a CDMA/W-CDMA network using a RACH preamble coupled to a base station.
GB T asserts direct infringement of select device and method claims, and Apple moves for non-infringement while GBT seeks partial infringement judgment.
The court consolidated claim construction proceedings, construed terms such as preamble, access preamble, discrete power level, and resolved expert-matter disputes in prior memoranda.
The court grants Apple summary judgment of non-infringement, denies GBT’s partial infringement motion, and also denies Apple’s invalidity motion under 35 U.S.C. § 102(e).

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether Apple directly infringers on the asserted claims	GBT alleges devices read on all limitations, especially spreading a preamble and discrete power level.	Apple contends no infringement due to lack of spreading preamble and power-level handling per construction.	No literal or doctrine-of-equivalents infringement found.
Whether the accused devices perform discrete power levels as construed	GBT shows preambles have increasing, discretely different power levels over time.	Apple argues testing shows non-constant power within tolerances; ramping may occur outside the measured portion.	Evidence supports constant power over the middle preamble portion; discrete power level satisfied.
Whether the accused devices spread the access preamble as required	GBT argues spreading via scrambling codes increases preamble bandwidth and constitutes spreading prior to transmission.	Apple asserts preamble itself is not spread prior to transmission; spreading occurs during generation, not before.	No infringement because the accused devices do not spread the access preamble prior to transmission under the court's construction.
Whether the asserted claims are invalid under 35 U.S.C. § 102(e) due to priority	GBT asserts Dahlman predates and anticipates/obviousness applies; Kanterakis/Parsa conceived earlier and diligently pursued.	Apple contends Dahlman is prior art and that GBT failed to prove conception and diligence with corroboration.	Summary judgment on invalidity denied; issues of conception and diligence remain for trial.

Key Cases Cited

Matsushita Elec. Indus. Co. v. Zenith Radio Corp., 475 U.S. 574 (U.S. 1986) (burden to show no genuine issues of material fact in summary judgment)
Anderson v. Liberty Lobby, Inc., 477 U.S. 242 (U.S. 1986) (genuine issue of material fact; credibility not decided on summary judgment)
Celotex Corp. v. Catrett, 477 U.S. 317 (U.S. 1986) (burden-shifting framework for summary judgment)
Markman v. Westview Instruments, Inc., 517 U.S. 370 (U.S. 1996) (claim construction is a question of law)
Bai v. L&L Wings, Inc., 160 F.3d 1350 (Fed. Cir. 1998) (corroboration required for inventor testimony in priority analyses)
Warner-Jenkinson Co. v. Hilton Davis Chem. Co., 520 U.S. 17 (U.S. 1997) (doctrine of equivalents standard restricting literal infringement)
Monsanto Co. v. Syngenta Seeds, Inc., 503 F.3d 1352 (Fed. Cir. 2007) (priority and diligence considerations in anticipation/obviousness)
DSU Med. Corp. v. JMS Co., Ltd., 471 F.3d 1293 (Fed. Cir. 2006) (indirect infringement theories require direct infringement first)
Hybritech, Inc. v. Monoclonal Antibodies, Inc., 802 F.2d 1376 (Fed. Cir. 1986) (conception and corroboration standards for patent priority)
Mahon v. Monoclonal Antibodies, Inc., Not an official reporter; omitted (Omitted) (Omit non-official entries)