United States Court of Appeals for the Federal Circuit

Similar documents
(L); NOBELBIZ, INC., GLOBAL CONNECT, L.L.C.; T C N, INC.,

SCA Hygiene (Aukerman Laches): Court Grants En Banc Review

Latham & Watkins Litigation Department

United States Court of Appeals for the Federal Circuit

UNITED STATES COURT OF APPEALS FOR THE FEDERAL CIRCUIT

Brian D. Coggio Ron Vogel. Should A Good Faith Belief In Patent Invalidity Negate Induced Infringement? (The Trouble with Commil is DSU)

United States Court of Appeals for the Federal Circuit

Supreme Court s New Standard of Review for Claim Construction

IN SEARCH OF A (NARROWER) MEANING

THE DISTRICT COURT CASE

IN THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF TEXAS HOUSTON DIVISION. v. CIVIL ACTION NO. H Defendants.

United States Court of Appeals for the Federal Circuit

Does Teva Matter? Edward R. Reines December 10, 2015

UNITED STATES COURT OF APPEALS FOR THE FEDERAL CIRCUIT

SHARPLY DIVIDED EN BANC FEDERAL CIRCUIT REAFFIRMS APPLICATION OF A DE NOVO STANDARD OF REVIEW FOR CLAIM CONSTRUCTION

IN THE UNITED STATES DISTRICT COURT FOR THE EASTERN DISTRICT OF TEXAS MARSHALL DIVISION REPORT AND RECOMMENDATION

Case 6:16-cv RWS-JDL Document 209 Filed 07/21/17 Page 1 of 6 PageID #: 17201

Case 6:12-cv MHS-CMC Document 1645 Filed 07/22/14 Page 1 of 10 PageID #: 20986

Fed. Circ. Radically Changes The Law Of Obviousness

United States Court of Appeals for the Federal Circuit

Case 2:17-cv JRG Document 234 Filed 07/19/18 Page 1 of 9 PageID #: 18232

United States Court of Appeals for the Federal Circuit

Case 1:09-cv REB-CBS Document 35 Filed 06/15/09 USDC Colorado Page 1 of 7 IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF COLORADO

Brief Summary of Precedential Patent Case Law For the Period to

United States Court of Appeals for the Federal Circuit

Case 2:15-cv JRG-RSP Document 41 Filed 10/19/15 Page 1 of 9 PageID #: 338

Fundamentals of Patent Litigation 2018

United States Court of Appeals for the Federal Circuit BJ SERVICES COMPANY, HALLIBURTON ENERGY SERVICES, INC.,

United States Court of Appeals for the Federal Circuit

Induced and Divided Infringement: Updates and Strategic Views

IN THE UNITED STATES DISTRICT COURT FOR THE EASTERN DISTRICT OF TEXAS MARSHALL DIVISION

UNITED STATES DISTRICT COURT DISTRICT OF MASSACHUSETTS

United States Court of Appeals for the Federal Circuit

United States Court of Appeals for the Federal Circuit

United States Court of Appeals for the Federal Circuit

Case 1:15-cv MAK Document 44 Filed 10/10/17 Page 1 of 13 PageID #: 366 IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELAWARE

United States District Court District of Massachusetts

Case: , 12/29/2014, ID: , DktEntry: 20-1, Page 1 of 3 NOT FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

United States Court of Appeals for the Federal Circuit

United States Court of Appeals for the Federal Circuit

United States Court of Appeals for the Federal Circuit

Claim Construction Is Ultimately A Question Of Law But May Involve Underlying Factual Questions

United States Court of Appeals for the Federal Circuit

IN THE UNITED STATES DISTRICT COURT FOR THE EASTERN DISTRICT OF TEXAS MARSHALL DIVISION DAUBERT ORDER

IN THE UNITED STATES DISTRICT COURT FOR THE EASTERN DISTRICT OF TEXAS TYLER DIVISION AMENDED MEMORANDUM OPINION AND ORDER

United States Court of Appeals for the Federal Circuit

UNITED STATES DISTRICT COURT SOUTHERN DISTRICT OF CALIFORNIA

United States Court of Appeals for the Federal Circuit

IN THE UNITED STATES DISTRICT COURT FOR THE EASTERN DISTRICT OF TEXAS TYLER DIVISION. Plaintiff, CIVIL ACTION NO. 6:17-CV-84 RWS-JDL v.

Case 3:12-cv VC Document 119 Filed 05/09/17 Page 1 of 13 (Counsel listed on signature page)

United States Court of Appeals for the Federal Circuit

Case 1:13-cv LGS Document 20 Filed 06/26/13 Page 1 of 8. : Plaintiffs, : : : Defendants. :

Case 2:14-cv JRG Document 68 Filed 12/12/14 Page 1 of 12 PageID #: 2010

United States Court of Appeals for the Federal Circuit

Case: , 01/08/2018, ID: , DktEntry: 55-1, Page 1 of 5 NOT FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

IN THE UNITED STATES DISTRICT COURT FOR THE EASTERN DISTRICT OF TEXAS MARSHALL DIVISION

United States Court of Appeals for the Federal Circuit

UNITED STATES COURT OF APPEALS FOR THE FEDERAL CIRCUIT

Paper No Filed: September 28, 2017 UNITED STATES PATENT AND TRADEMARK OFFICE

Case: , 08/27/2018, ID: , DktEntry: 126-1, Page 1 of 4 NOT FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

UNITED STATES DISTRICT COURT NORTHERN DISTRICT OF CALIFORNIA SAN JOSE DIVISION

United States Court of Appeals for the Federal Circuit

United States Court of Appeals for the Federal Circuit

United States Court of Appeals for the Federal Circuit

United States Court of Appeals for the Federal Circuit

Case No UNITED STATES COURT OF APPEALS FOR THE FEDERAL CIRCUIT. ULTRAMERCIAL, LLC and ULTRAMERCIAL, INC., and WILDTANGENT, INC.

IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELA WARE MEMORANDUM ORDER

United States Court of Appeals for the Federal Circuit

United States Court of Appeals for the Federal Circuit

Case: , 04/25/2018, ID: , DktEntry: 61-1, Page 1 of 5 NOT FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

United States Court of Appeals for the Federal Circuit , DETHMERS MANUFACTURING COMPANY, INC., Plaintiff-Appellant,

RECENT DEVELOPMENTS IN CLAIM CONSTRUCTION

UNITED STATES DISTRICT COURT NORTHERN DISTRICT OF CALIFORNIA SAN FRANCISCO DIVISION

Supreme Court of the United States

United States Court of Appeals for the Federal Circuit

Case: , 10/18/2016, ID: , DktEntry: 57-1, Page 1 of 4 NOT FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

2017 U.S. LEXIS 1428, * 1 of 35 DOCUMENTS. LIFE TECHNOLOGIES CORPORATION, ET AL., PETITIONERS v. PROMEGA CORPORATION. No

Patent Local Rule 3 1 requires, in pertinent part:

Case 1:12-cv PBS Document 1769 Filed 07/22/16 Page 1 of 11 UNITED STATES DISTRICT COURT DISTRICT OF MASSACHUSETTS

Case 6:12-cv MHS-JDL Document 48 Filed 02/06/13 Page 1 of 5 PageID #: 1365

The Changing Landscape of AIA Proceedings

UNITED STATES COURT OF APPEALS FOR THE FEDERAL CIRCUIT

UNITED STATES DISTRICT COURT EASTERN DISTRICT OF TEXAS MARSHALL DIVISION. CORE WIRELESS LICENSING S.A.R.L., Case No. 2:14-cv-911-JRG-RSP (lead) v.

344 SUFFOLK UNIVERSITY LAW REVIEW [Vol. XLIX:343

United States Court of Appeals for the Federal Circuit

UNITED STATES PATENT AND TRADEMARK OFFICE BEFORE THE PATENT TRIAL AND APPEAL BOARD. FACEBOOK, INC., Petitioner

UNITED STATES DISTRICT COURT NORTHERN DISTRICT OF CALIFORNIA SAN JOSE DIVISION ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) )

IN THE UNITED STATES COURT OF APPEALS FOR THE FIFTH CIRCUIT

IN THE UNITED STATES DISTRICT COURT FOR THE WESTERN DISTRICT OF PENNSYLVANIA ) ) ) ) ) ) ) ) ) ) MEMORANDUM OPINION

MEMORANDUM OPINION. No CV. KILLAM RANCH PROPERTIES, LTD., Appellant. WEBB COUNTY, TEXAS, Appellee

IN THE UNITED STATES COURT OF APPEALS FOR THE FIFTH CIRCUIT

United States Court of Appeals for the Federal Circuit

UNITED STATES DISTRICT COURT NORTHERN DISTRICT OF CALIFORNIA SAN JOSE DIVISION

MEMORANDUM AND ORDER - versus - 14-cv Plaintiff, Defendant.

UNITED STATES DISTRICT COURT FOR THE WESTERN DISTRICT OF TEXAS SAN ANTONIO DIVISION. Plaintiff, v. CIVIL ACTION NO.

United States Court of Appeals for the Federal Circuit

NOT FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

When is a ruling truly final?

Paper No Entered: October 12, 2017 UNITED STATES PATENT AND TRADEMARK OFFICE BEFORE THE PATENT TRIAL AND APPEAL BOARD

PATENT CASE LAW UPDATE

Transcription:

Case: 16-1104 Document: 83 Page: 1 Filed: 12/08/2017 United States Court of Appeals for the Federal Circuit NOBELBIZ, INC., Plaintiff-Appellee v. GLOBAL CONNECT, L.L.C., T C N, INC., Defendants-Appellants 2016-1104, 2016-1105 Appeals from the United States District Court for the Eastern District of Texas in Nos. 6:12-cv-00244-RWS, 6:12-cv-00247-RWS, 6:13-cv-00804-MHS, and 6:13-cv- 00805-MHS, Judge Robert Schroeder III, Judge Michael H. Schneider. ON PETITION FOR REHEARING EN BANC RALPH A. DENGLER, Venable LLP, New York, NY, filed a petition for rehearing en banc for plaintiff-appellee. Also represented by GIANNA CRICCO-LIZZA; MEGAN S. WOODWORTH, Washington, DC; WILLIAM A. HECTOR, San Francisco, CA. CLINTON EARL DUKE, Durham Jones & Pinegar, Salt Lake City, UT, filed a response to the petition for defendants-appellants. Also represented by LYNDON BRADSHAW.

Case: 16-1104 Document: 83 Page: 2 Filed: 12/08/2017 2 NOBELBIZ, INC. v. GLOBAL CONNECT, L.L.C. Before PROST, Chief Judge, NEWMAN, LOURIE, DYK, MOORE, O MALLEY, REYNA, WALLACH, TARANTO, CHEN, HUGHES, and STOLL, Circuit Judges. O MALLEY, Circuit Judge, with whom NEWMAN and REYNA, Circuit Judges, join, dissents from the denial of the petition for rehearing en banc. PER CURIAM. O R D E R A petition for rehearing en banc was filed by appellee NobelBiz, Inc., and a response thereto was invited by the court and filed by appellants Global Connect, L.L.C. and T C N, Inc. The petition for rehearing was first referred to the panel that heard the appeal, and thereafter, the petition for rehearing and response were referred to the circuit judges who are in regular active service. A poll was requested, taken, and failed. Upon consideration thereof, IT IS ORDERED THAT: The petition for panel rehearing is denied. The petition for rehearing en banc is denied. The mandate of the court will issue on December 15, 2017. FOR THE COURT December 8, 2017 Date /s/ Peter R. Marksteiner Peter R. Marksteiner Clerk of Court

Case: 16-1104 Document: 83 Page: 3 Filed: 12/08/2017 United States Court of Appeals for the Federal Circuit NOBELBIZ, INC., Plaintiff-Appellee v. GLOBAL CONNECT, L.L.C., T C N, INC., Defendants-Appellants 2016-1104, 2016-1105 Appeals from the United States District Court for the Eastern District of Texas in Nos. 6:12-cv-00244-RWS, 6:12-cv-00247-RWS, 6:13-cv-00804-MHS, and 6:13-cv- 00805-MHS, Judge Robert Schroeder III, Judge Michael H. Schneider. O MALLEY, Circuit Judge, with whom NEWMAN and REYNA, Circuit Judges, join, dissenting from the denial of rehearing en banc. The panel majority in this case held that the district court erred by adopting a plain-and-ordinary-meaning construction for several non-technical terms, and by purportedly allowing the parties experts and counsel to make arguments to the jury about what those simple terms mean. See NobelBiz, Inc. v. Glob. Connect, L.L.C., Nos. 2016-1104, 2016-1105, 2017 WL 3044641, at *2 4 (Fed. Cir. July 19, 2017). I agree with Judge Newman, who dissented from that holding, that the majority erred

Case: 16-1104 Document: 83 Page: 4 Filed: 12/08/2017 2 NOBELBIZ, INC. v. GLOBAL CONNECT, L.L.C. by turning what is fundamentally a factual question for the jury regarding whether the accused systems and features infringe the patent claims into a legal one for the court and ultimately this court to resolve. 1 See id. at *4 6 (Newman, J., dissenting). And, by relying on O2 Micro International Ltd. v. Beyond Innovation Technology Co., 521 F.3d 1351 (Fed. Cir. 2008), to support its holding, the majority has added to the growing confusion regarding the scope of that decision. In the nearly ten years since O2 Micro issued, this court has stretched its holding well beyond the factual circumstances at issue there. In so doing, we have caused unnecessary difficulties for district courts, which must manage these already difficult-enough cases, and have intruded on the jury s factfinding role. It is time we provide much-needed guidance en banc about O2 Micro s reach. I dissent from the court s order declining the opportunity to do so in this case. O2 Micro involved technology related to DC-to-AC converter circuits for controlling the amount of power delivered to cold cathode fluorescent lamps used to backlight laptop screens. Id. at 1354. During the claim construction phase of the case, the parties presented a clear dispute to the district court regarding the meaning of the term only if in the claim limitation a feedback control loop circuit... adapted to generate a second signal pulse signal for controlling the conduction state of said second plurality of switches only if said feedback signal is above a predetermined threshold. Id. at 1356, 1360 61. The plaintiff asserted that the claims would be understood by one of ordinary skill in the art to only apply to the steady state operation of the switching circuit, while the defendants argued that the claims apply at all times, with no 1 I will not repeat the thoughtful points spelled out in Judge Newman s panel dissent I could not state them more clearly. I do adopt them by reference, however.

Case: 16-1104 Document: 83 Page: 5 Filed: 12/08/2017 NOBELBIZ, INC. v. GLOBAL CONNECT, L.L.C. 3 exception. Id. at 1360. Thus, the parties disputed not the meaning of the words themselves, but the scope that should be encompassed by th[e] claim language. Id. at 1361. The district court acknowledged the parties dispute but declined to resolve it, giving the term a plainand-ordinary-meaning construction instead. Id. This left the parties to argue about claim scope to the jury. See id. at 1362 ( O2 Micro also brought the inventor of the patents-in-suit to testify regarding the meaning of only if [.] ). The technology at issue here, by contrast, is much different, and, in fact, simpler. The patents relate to a method for processing a communication between a first party and a second party. See NobelBiz, 2017 WL 3044641, at *1. The terms at issue replacement telephone number, modify caller identification data of the call originator, and outbound call are less technical than the term at issue in O2 Micro. And, at least for two of those terms, the parties did not dispute how a skilled artisan would understand their scope. Instead, the parties disputed only whether a formal construction was required. See id. Finally, the expert testimony in this case reveals that neither expert opined specifically about the meaning of the claim terms, nor did they contend that the terms have complex or technical meanings to one of skill in the art. The experts merely expressed their own views about whether the allegedly infringing systems read on those terms. This case is therefore distinguishable from O2 Micro. Beyond this case, O2 Micro has caused difficulties for courts and litigants alike. O2 Micro s general rule is easy enough to state in the abstract: When... parties raise an actual dispute regarding the proper scope of the[] claims, the court, not the jury, must resolve that dispute. O2 Micro, 521 F.3d at 1360. We have not articulated, however, what constitutes an actual dispute in this context. While we expect district courts to distinguish

Case: 16-1104 Document: 83 Page: 6 Filed: 12/08/2017 4 NOBELBIZ, INC. v. GLOBAL CONNECT, L.L.C. bona fide infringement arguments from those masquerading as claim construction disputes, we have not provided the lower courts with effective guidance to do so. As a result, courts have struggled to strike the delicate balance between ensuring that they do not permit the jury to determine claim scope, on the one hand, and ensuring that they do not encroach upon the constitutionally mandated function of the jury to find facts, on the other. One court recently expressed frustration over O2 Micro and the confusion surrounding it, citing to the panel decision in this case as an example of the trap that O2 Micro has set for district courts: O2 Micro problems are difficult to evaluate with any confidence during pretrial (or trial, for that matter) because it is frequently impossible to delineate between a pure claim construction argument and a noninfringement argument. Yet juries are summoned, trials are held, and verdicts are reached, only to have the case fall in the O2 Micro trap on appeal. See, e.g., NobelBiz, Inc. v. Glob. Connect, L.L.C., No. 2016-1104, 2017 WL 3044641 (Fed. Cir. July 19, 2017). Short of holding both a jury trial and an identical bench trial in every patent case, there is not a clear path around O2 Micro. Huawei Techs. Co. v. T-Mobile US, Inc., No. 2:16-CV- 00052-JRG-RSP, 2017 WL 4070592, at *1 (E.D. Tex. Aug. 29, 2017), adopted, 2017 WL 4049251 (E.D. Tex. Sept. 13, 2017). Without additional guidance from our court, district courts will continue to fall into this trap. Furthermore, our case law has applied O2 Micro inconsistently. We have, at times, found that when a term is non-technical and within the ken of an average juror, there is no actual dispute under O2 Micro, and therefore no need for court intervention. See, e.g., GPNE Corp. v. Apple Inc., 830 F.3d 1365, 1371 73 (Fed. Cir. 2016) (find-

Case: 16-1104 Document: 83 Page: 7 Filed: 12/08/2017 NOBELBIZ, INC. v. GLOBAL CONNECT, L.L.C. 5 ing no O2 Micro violation where the district court declined to construe the term pager, and determining that the real dispute was about allowing the defendant to make certain arguments to the jury ); Summit 6, LLC v. Samsung Elecs. Co., 802 F.3d 1283, 1291 (Fed. Cir. 2015) (finding that the district court did not err in declining to construe the disputed term, which was itself comprised of commonly used terms; each is used in common parlance and has no special meaning in the art ); ActiveVideo Networks, Inc. v. Verizon Commc ns, Inc., 694 F.3d 1312, 1326 (Fed. Cir. 2012) (finding that the district court did not err under O2 Micro in concluding that superimposing claim terms have plain meanings that do not require additional construction ); see also Union Carbide Chems. & Plastics Tech. Corp. v. Shell Oil Co., 425 F.3d 1366, 1377 (Fed. Cir. 2005) ( Because the claim language does not require a particular form of testing, this inquiry is not a claim construction question, which this court reviews de novo. Rather, this court reviews this inquiry as a question of fact. ), overruled on other grounds by Cardiac Pacemakers, Inc. v. St. Jude Med., Inc., 576 F.3d 1348 (Fed. Cir. 2009). At other times, however, we have found that such a construction leaves the scope of the claims unanswered, as in this case. See, e.g., NobelBiz, 2017 WL 3044641, at *2 4; Eon Corp. IP Holdings LLC v. Silver Spring Networks, Inc., 815 F.3d 1314, 1319 20 (Fed. Cir. 2016) (finding that the district court erred by instructing the jury that the terms portable and mobile should be given their plain and ordinary meanings). It is unsurprising, therefore, that district courts have themselves struggled to find a consistent approach for resolving O2 Micro issues. Compare Unwired Planet, LLC v. Google Inc., No. 3:12-cv-00504-MMD-VPC, 2014 WL 7012497, at *10 30 (D. Nev. Dec. 12, 2014) (holding that O2 Micro required the court to reject plain-andordinary-meaning constructions), aff d in part, 660 F.

Case: 16-1104 Document: 83 Page: 8 Filed: 12/08/2017 6 NOBELBIZ, INC. v. GLOBAL CONNECT, L.L.C. App x 974 (Fed. Cir. 2016), with Unwired Planet, LLC v. Square, Inc., No. 3:13-cv-00579-RCJ-WGC, 2014 WL 4966033, at *2 (D. Nev. Oct. 3, 2014) (citing O2 Micro for the proposition that a district court is not obligated to construe terms with ordinary meanings, lest trial courts be inundated with requests to parse the meaning of every word in the asserted claims ); see also Peter E. Gratzinger, After O2 Micro: The Court s Evolving Duty to Map Words to Things, 32 Santa Clara High Tech. L.J. 141, 142 43 (2015 2016) (noting that, despite the seemingly simple premise articulated in O2 Micro, there is wide variation in how district courts interpret and implement the duty to resolve claim construction disputes ); Matthew Chivvis, Patents: When the Plain and Ordinary Meaning Is Neither Plain Nor Ordinary, N.Y. L.J., Aug. 11, 2016, at 1 ( The U.S. Court of Appeals for the Federal Circuit s decisions provide conflicting guidance on the duty to construe a term when the plain and ordinary meaning is disputed. The lack of a clear rule has allowed district courts to vary widely in how they handle claim construction in these circumstances. ). Our lack of clarity about the reach of O2 Micro has also led courts to stray from general principles of orderly case management, making patent litigation needlessly more expensive and inefficient. Litigants often invoke O2 Micro to justify belated claim constructions presented long after court-ordered deadlines. See Huawei Techs., 2017 WL 4070592, at *1 (noting that one party or another argues in virtually every patent case approaching trial that the court must ensure that... late-breaking claim construction dispute[s] [are] not presented to the jury ); Opticurrent, LLC v. Power Integrations, Inc., No. 2:16-CV- 325, 2017 WL 1383979, at *10 (E.D. Tex. Apr. 18, 2017) (construing a claim term to avoid late-breaking disputes lodged under the guise of O2 Micro, despite the fact that the term has no special meaning other than its plain meaning ).

Case: 16-1104 Document: 83 Page: 9 Filed: 12/08/2017 NOBELBIZ, INC. v. GLOBAL CONNECT, L.L.C. 7 And, even though district courts maintain broad discretion to manage their dockets, many courts apparently feel compelled by O2 Micro to resolve such disputes, no matter how late they are raised and no matter how simple the question posed for consideration by the jury might seem. See, e.g., Tyco Healthcare Grp. LP v. Applied Med. Res. Corp., No. 9:06-CV-151, 2009 WL 1883423, at *1, 9 (E.D. Tex. June 30, 2009) (in view of O2 Micro, allowing the defendant to modify its proposed construction long after the Markman hearing had been conducted ); see also Pressure Prods. Med. Supplies, Inc. v. Greatbatch Ltd., 599 F.3d 1308, 1315 16 (Fed. Cir. 2010) (finding that the district court s adjustment of a prior construction in response to cross-examination at trial was consistent with the trial court s duty under O2 Micro). District courts reading of O2 Micro as preventing them from enforcing their own deadlines effectively places sand in the gears of the overall trial process and disincentivizes litigants from crystallizing their disputes early in the case. Packet Intelligence LLC v. NetScout Sys., Inc., No. 2:16-CV-230- JRG, 2017 WL 2531591, at *2 n.2 (E.D. Tex. Apr. 27, 2017) (denying plaintiff s request to add products, in part because of the effect that a late O2 Micro dispute would have on the litigation). We should clarify the scope of O2 Micro s reach, and, at the very least, clarify under what circumstances a plain-and-ordinary-meaning dispute is an actual one within the meaning of O2 Micro. The fact that parties experts might proffer differing definitions of a term s plain and ordinary meaning to a jury should not be enough to justify removing that question from the jury s consideration. This case presents the opportunity for us to clarify the confusion our case law has created. For these reasons, I respectfully dissent from the denial of rehearing en banc.