MEMORANDUM **

Clarence Gipbsin (Gipbsin) appeals pro se from judgments in favor of defendants in his 42 U.S.C. § 1983 action alleging *740 retaliation for exercise of his First Amendment rights and excessive use of force by California Department of Corrections and Rehabilitation personnel. We have jurisdiction under 28 U.S.C. § 1291. We affirm on the excessive force claim and reverse and remand on the retaliation claim.

Gipbsin’s informal opening brief raises various issues relating, to the district court’s orders and proceedings. Gipbsin’s informal opening brief, however, fails to raise any cogent arguments regarding how the district court erred. This Court therefore declines to make any findings on the issues raised in Gipbsin’s opening brief. See Leer v. Murphy, 844 F.2d 628, 634 (9th Cir. 1988) (“Issues raised in a brief which are not supported by argument are deemed abandoned.”). This Court addresses only the substantive issues raised by Court-appointed amicus curiae.

The district court granted summary judgment in favor of Appellees on Gipbsin’s First Amendment retaliation claim. We review grants of summary judgment de novo. White v. City of Sparks, 500 F.3d 953, 955 (9th Cir. 2007). The district court erred in two respects. First, the district court limited Gipbsin’s First Amendment claim to Defendants’ retaliation “for plaintiff filing a civil lawsuit regarding his religious diet.” Gipbs-in’s deposition testimony and operative complaint, however, demonstrate that his First Amendment claim is broader in scope. In the complaint, Gipbsin alleges that he was retaliated against for requesting a religious dietary meal. In deposition, Gipbsin testified both that he was retaliated against because he requested a vegetarian meal and because he filed prior lawsuits. Second, the district court concluded that Gipbsin had failed to produce evidence that Defendants “were even aware of Plaintiffs civil lawsuit.” Gipbsin, however, testified at deposition that he “told [Defendants] that [he] had the civil case dealing with [his] vegetarian meal.” The district court therefore erred both by limiting the scope of Plaintiffs retaliation claim and by finding that there was no evidence that the Defendants knew about Gipbsin’s prior litigation activity. We conclude that the district court erred in granting summary judgment as to Gipbsin’s First Amendment claim.

Following the district court’s grant of summary judgment on Gipbsin’s First Amendment claim, Gipbsin’s Eighth Amendment excessive force claim was tried before a jury and a verdict based thereon was entered in favor of the Appel-lees. Appellees argue, citing Lum v. City & County of Honlulu, 963 F.2d 1167, 1169-70 (9th Cir. 1992), that Gipbsin’s retaliation claim is foreclosed by the jury verdict. Lum is inapplicable to this case. In Lum we held that there was no need to review denials of summary judgment after a jury trial on the merits. Here, the district court granted summary judgment on Gipbsin’s retaliation claim and the jury considered only Gipbsin’s excessive force claim in rendering its verdict. The jury’s verdict, therefore, does not foreclose Gipbsin’s retaliation claim.

We conclude that the district court’s grant of summary judgment was in error, and remand for further proceedings on Gipbsin’s First Amendment retaliation claim.

AFFIRMED in part, REVERSED and REMANDED in part. Costs are awarded to Plaintiff-Appellant.