CBT FLINT PARTNERS, LLC v. Return Path, Inc.

566 F. Supp. 2d 1363, 2008 U.S. Dist. LEXIS 53674, 2008 WL 2744755
CourtDistrict Court, N.D. Georgia
DecidedJuly 10, 2008
DocketCivil Action File 1:07-CV-1822-TWT
StatusPublished
Cited by5 cases

This text of 566 F. Supp. 2d 1363 (CBT FLINT PARTNERS, LLC v. Return Path, Inc.) is published on Counsel Stack Legal Research, covering District Court, N.D. Georgia primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
CBT FLINT PARTNERS, LLC v. Return Path, Inc., 566 F. Supp. 2d 1363, 2008 U.S. Dist. LEXIS 53674, 2008 WL 2744755 (N.D. Ga. 2008).

Opinion

ORDER

THOMAS W. THRASH, JR., District Judge.

This is a patent infringement action. It is before the Court for construction of the *1366 disputed claims in United States Patent Nos. 6,192,114 and 6,587,550.

I. Background

On August 1, 2007, CBT Flint Partners, LLC filed its Complaint against Goodmail Systems, Inc., Return Path, Inc., and Cisco IronPort Systems LLC, alleging patent infringement. CBT alleges that it owns United States Patent No. 6,192,114 (“the '114 Patent”) entitled “Method And Apparatus For Billing A Fee To A Party Initiating An Electronic Mail Communication When The Party Is Not On An Authorization List Associated With The Party To Whom The Communication Is Directed,” and United States Patent No. 6,587,550 (“the '550 Patent”) entitled “Method And Apparatus For Enabling A Fee To Be Charged To A Party Initiating An Electronic Mail Communication When The Party Is Not On An Authorization List Associated With The Party To Whom The Communication Is Directed.” (Compl. at 4-5.) The parties disagree as to the construction of several phrases in the patent claims.

II. Claims Construction Rules

The construction of claims in a patent case is a matter of law for the Court. Markman v. Westview Instruments, Inc., 517 U.S. 370, 116 S.Ct. 1384, 134 L.Ed.2d 577 (1996). In construing patent claims, the Court looks first to the intrinsic evidence. The intrinsic evidence consists of the patent itself, the claim terms, the specification (or written description), and the patent prosecution history, if in evidence. Microsoft Corp. v. Multi-Tech Sys., Inc., 357 F.3d 1340, 1346 (Fed.Cir.2004). However, not all intrinsic evidence is equal. Digital Biometrics, Inc. v. Identix, Inc., 149 F.3d 1335, 1344 (Fed.Cir.1998). First among intrinsic evidence is the claim language. Pitney Bowes, Inc. v. Hewlett-Packard Co., 182 F.3d 1298, 1305 (Fed.Cir.1999). A “bedrock principle” of patent law is that the claims of the patent define the patentee’s invention. Phillips v. AWH Corp., 415 F.3d 1303, 1312 (Fed.Cir.2005) (en banc). Thus, the Court’s focus must “begin and remain centered on the language of the claims themselves, for it is that language that the patentee chose to use to particularly point out and distinctly claim the subject matter which the patentee regards as his invention.” Gillette Co. v. Energizer Holdings, Inc., 405 F.3d 1367, 1370 (Fed.Cir.2005) (quoting Interactive Gift Express, Inc. v. Compuserve Inc., 256 F.3d 1323, 1331 (Fed.Cir.2001)); see also Markman v. Westview Instruments, Inc., 52 F.3d 967, 980 (Fed.Cir.1995) (“The written description part of the specification itself does not delimit the right to exclude. That is the function and purpose of claims.”). When reading claim language, terms are generally given their ordinary and customary meaning, which is the meaning that the term would have to a person of ordinary skill in the art at the time of the invention. Phillips, 415 F.3d at 1313-14.

As a result, an objective baseline from which to begin a claim construction is to determine how a person of ordinary skill in the relevant art would understand the terms. Phillips, 415 F.3d at 1313. Although “the claims of the patent, not its specifications, measure the invention,” Smith v. Snow, 294 U.S. 1, 11, 55 S.Ct. 279, 79 L.Ed. 721 (1935), the person of ordinary skill in the art is deemed to read the claim terms in the context of the entire patent, including the specification, rather than solely in the context of the particular claim in which the disputed term appears. Phillips, 415 F.3d at 1313. For instance, the patentee may act as his own lexicographer and set forth a special definition for a claim term. Id. at 1316.

*1367 Claims are part of a “fully integrated written instrument” and, therefore, “must be read in view of the specification, of which they are a part.” Phillips, 415 F.3d at 1315. In fact, the specification is “the single best guide to the meaning of a disputed term” and is often dispositive. Id. (quoting Vitronics Corp. v. Conceptronic, Inc., 90 F.3d 1576, 1582 (Fed.Cir.1996)). “It is therefore entirely appropriate for a court, when conducting claim construction, to rely heavily on the written description for guidance as to the meaning of the claims.” Phillips, 415 F.3d at 1317. Nevertheless, the Court must be careful not to read a limitation into a claim from the specification. Liebel-Flarsheim Co. v. Medrad, Inc., 358 F.3d 898, 904 (Fed.Cir.2004). In particular, the Court cannot limit the invention to the specific examples or preferred embodiments found in the specification. Phillips, 415 F.3d at 1323; see also Resonate Inc. v. Alteon Websystems, Inc., 338 F.3d 1360, 1364-65 (Fed.Cir.2003) (“[A] particular embodiment appearing in the written description may not be read into a claim when the claim is broader than the embodiment.”). In addition to the specification, the prosecution history may be used to determine if the patentee limited the scope of the claims during the patent prosecution. Southwall Techs., Inc. v. Cardinal IG Co., 54 F.3d 1570, 1576 (Fed.Cir.1995). The prosecution history helps to demonstrate how the patentee and the Patent and Trademark Office (“PTO”) understood the patent. Phillips, 415 F.3d at 1317. However, because the prosecution history represents the ongoing negotiations between the PTO and the patentee, rather than a final product, it is not as useful as the specification for claim construction purposes. Id.

Extrinsic evidence — such as expert and inventor testimony, dictionaries, and learned treatises — is only considered when the claim language remains genuinely ambiguous after considering all of the patent’s intrinsic evidence. Tegal Corp. v. Tokyo Electron America, Inc.,

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CBT FLINT PARTNERS, LLC v. Return Path, Inc.
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566 F. Supp. 2d 1363, 2008 U.S. Dist. LEXIS 53674, 2008 WL 2744755, Counsel Stack Legal Research, https://law.counselstack.com/opinion/cbt-flint-partners-llc-v-return-path-inc-gand-2008.