Plaintiff Golden Bridge Technology, Inc. (“GBT”) appeals the district court’s grant of summary judgment in favor of the defendants. 1 The district court granted summary judgment against GBT’s claim that the defendants unlawfully conspired not to deal with GBT in violation of the Sherman Antitrust Act. For the following reasons, we affirm.
I
Golden Bridge Technology (“GBT”) develops wireless communications technology for cellular networks. Along with the Ap-pellees, GBT is a member of a non-profit standard setting organization called Third Generation Partnership Project (“3GPP”). 3GPP institutes uniform technology standards for the telecommunications industry to ensure worldwide compatibility of cellular devices and systems. More than 260 companies belong to 3GPP, representing all levels of the cell phone industry. The 3GPP members are responsible for creating and developing the 3GPP standard, which means determining what technologies will be included in the standard as either mandatory or optional features.
GBT owns pаtents to Common Packet Channel technology (“CPCH”), which allows the transmittal of electronic information packets between cellular phones and base stations. In 1999, 3GPP adopted CPCH as an optional feature. Optional status meant that manufacturers did not have to use CPCH, but if they chose to they had to follow the 3GPP standard to ensure compatibility with other equipment and networks. Since that time, two companies have obtained licenses to use CPCH, but neither company has field tested or implemented the technology.
Changes to the 3GPP standard occur through consensus of the individual members. Individual members arе divided into Working Groups, which have different responsibilities related to developing the standard. Each Working Group belongs to one of six Technical Specification Groups, and the Technical Specification Groups are presided over at the top level by the Project Coordination Group. The Working Groups propose changes to the 3GPP standard by submitting change requests to the other Working Groups, which if approved are submitted to the relevant Technical Specification Group for decision. The opposition of a single individual member prevents approval of a change request, unless 71% of individual members attending a subsequent plenary meeting vote to adopt the change. Technical decisions are *270 appealable to the Project Coordination Group.
At the 2004 plenary meeting for the Technical Specification Group to which GBT and the Appellees belonged, individual members wanted to simplify the 3GPP standard by removing оld and unused technologies. At a subsequent Working Group meeting in Scottsdale, Arizona, two individual members presented a proposed feature clean-up list that did not include CPCH. No decision was reached, and the clean-up discussions continued via emails between several companies in attendance at the Scottsdale meeting. These companies (including Motorola, Ericsson, and Qualcomm, but not Lucent) discussed adding CPCH to the clean-up list. No agreement was reached and they ultimately declined to include it, apparently due to concerns that its inclusion would prevent consensus. GBT did not аttend this meeting and was not included on the emails.
The next plenary meeting occurred in Tokyo, Japan. Appellees all attended this meeting, but GBT did not. The proposed feature clean-up list was presented, still not including CPCH. However, an Ericsson representative spoke out in front of the entire group, suggesting adding CPCH to the clean-up list. Cingular, a previous friend of CPCH, announced support for removal. No objections arose. Discussion turned to other issues, and the chairperson of the plenary meeting requested that the members hold an offline session to obtain consensus on unresolved items. On the final day of the plenary meeting, the members presented the revised clean-up list with CPCH included. No one objected, so the Working Groups created change requests for each feature on the list. These change requests were approved at a subsequent Working Group meeting, which GBT failed to attend. At the following plenary meeting in Quebec, the change requests obtained final unanimous approval and all of the features on the revised clean-up list were removed from the 3GPP standard. GBT also failed to attend this meeting and did not appeal CPCH’s removal to the Project Coordination Group.
GBT filed this lawsuit рrior to the Quebec meeting, alleging a violation of the Sherman Antitrust Act, 15 U.S.C. § 1. GBT claimed that the defendants conspired with each other to remove CPCH from the 3GPP standard, resulting in the unlawful exclusion of GBT from the market. The district court granted the defendants’ motion for summary judgment, finding that GBT had failed to present any evidencе of a conspiracy. GBT now appeals.
II
We review the district court’s grant of summary judgment
de novo,
applying the same standard as the district court.
Fabela v. Socorro Indep. Sch. Dist.,
The Supreme Court has specified what а plaintiff must show to avoid summary judgment on a Sherman Act § 1 claim:
To survive a motion for summary judgment ... a plaintiff seeking damages for a violation of § 1 must present evidence “that tends to exclude the possibility” that the alleged conspirators acted independently. Respondents ... must show that the inference of сonspiracy is rea *271 sonable in light of the competing inferences of independent action or collusive action that could not have harmed respondents.
See Matsushita Elec. Indus. Co. v. Zenith Radio Corp.,
Ill
Section 1 of the Sherman Act states: “Every contract, combination in the form of trust or otherwise, or conspiracy, in restraint of trade or commerce among the several States, or with foreign nations, is declаred to be illegal.” 15 U.S.C. § 1. Although § 1 could be read to outlaw all contracts, it has long been interpreted to only proscribe unreasonable restraints.
See Leegin Creative Leather Prods, v. PSKS, Inc.,
— U.S. --,
Regarding the conspiracy element, the Supreme Court recently observed that “the crucial questiоn [in a § 1 claim] is whether the challenged anticom-petitive conduct stems from independent decision or from an agreement.”
Bell Atlantic Corp. v. Twombly,
GBT argues that email communiсations between the Appellees and others following the Scottsdale meeting show a conspiracy, in the form of a group boycott, to eliminate CPCH from the 3GPP standard. The district court disagreed, granting summary judgment because GBT failed to present any evidence supporting the inference of a сonspiracy. We agree.
*272
As a threshold matter, GBT has presented only circumstantial evidence of a conspiracy. None of the emails, or any other evidence GBT presents; show an explicit understanding between the Appellees to collude and unlawfully eliminate CPCH from the standard.
Compare Tunica,
To show conspiracy, circumstantial evidenсe must tend to exclude the possibility that the Appellees acted independently.
See Matsushita,
GBT argues that the Appellees’ had economic motives to remove CPCH, demonstrating that they did not act independently. These purported motives include avoiding the payment of royalty fees to use CPCH and promoting their own competing technolоgy. The first motive finds no support in the evidence, because none of the Appellees, and in fact no company at all, had ever paid royalties to GBT for CPCH. Further, CPCH was an optional feature in the 3GPP standard. There was no rational reason for the Appellees to conspire to unlawfully rеmove CPCH to avoid paying royalties, when they could simply opt not to use it. Regarding the alleged competing-technology motive, such evidence does not exclude the possibility of independent conduct. Appellees could still support CPCH’s removal because they disliked it, even if they owned competing technology. In fact, the existence of an independent financial motive to remove CPCH might be
*273
an independent reason for each Appellee company to support CPCH’s removal. It is not sufficient under
Matsushita
for GBT to simply propose conceivable motives for conspirаtorial conduct; GBT’s evidence must tend to show that the possibility of independent conduct is
excluded. See Matsushita,
Moreover, the Appellees presented evidence showing that these informal communications are an important part of the standard setting process, and that the 3GPP standards are beneficial to the market. We have maintained that “it has long been recognized that the establishment and monitoring of trade standards is a legitimate and beneficial function.”
Consol. Metal Prods.,
As GBT has not met the threshold requirement of demonstrating the existence of an agreement in restraint of trade, we need not review the district court’s findings as to the remaining requirements of a § 1 violation. 2
TV
For the foregoing reasons, we AFFIRM the district court’s grant of summary judgment.
Notes
. The summary judgment briefing included defendants Nokia, Motorola, T-Mobile, Ericsson, Qualcomm, and Lucent. Subsequently the district court entered dismissals as to T-Mobile and Nokia, so the only appellees to this action are Motorola, Ericsson, Qual-comm, and Lucent ("Appellees”).
. Accordingly, though we affirm the district court’s ruling, our opinion should not be construed to endorse its conclusion that if GBT had shown an agreement in restraint of trade, the Appellees’ conduct would be considered
per se
illegal. A proper review of that conclusion would consider whether it conflicts with
Consol. Metal Prods.,
where we held that a standard setting organization’s decision not to certify a particular product did not
per se
violate Sherman Act § 1.
See
