I remember reading on a few other boards that CA had a few that didn't go any further because it was the wrong type of case to go to SCOTUS (almost guarantee loss).
California had a dozen or more concealed carry lawsuits which all lost. A couple filed cert petitions with SCOTUS which were denied, including the NRA cert petition in Peruta v. San Diego. The NRA was not the only so-called gun-rights group to file a concealed carry lawsuit in California and lose. The SAF and CalGuns.nuts Foundation had their own case, Richards v. Prieto, which was heard alongside the Peruta v. San Diego en banc case and went down in flames as well.
Mine was the very first lawsuit to challenge California's Open Carry bans, Nichols v. Newsom et al (formerly Nichols v. Brown et al). There is a First Amendment challenge to California's Unloaded Open Carry bans and two months ago a second California Open Carry lawsuit was filed (Baird v. Becerra) which, unfortunately, and foolishly, has limited itself to handguns.
Perhaps you are thinking of the NRA's fake Open Carry lawsuits, you know, the two lawsuits which make the same argument that was made in Peruta v. San Diego and lost. Namely, that the Heller decision said that Open Carry can be banned in favor of concealed carry. The California fake Open Carry lawsuit filed by the NRA/CRPA is Flanagan v. Becerra. The notice of appeal was filed in Flanagan a year ago. That appeal was fully briefed in December. If it were unrelated to the Second Amendment then it would be assigned to a three-judge panel in two or three years but since it purports to be a Second Amendment case. It is going to be a while before the appeal is argued and it is a guaranteed loss because only the Supreme Court or a new en banc panel can overrule the en banc panel decision in Pertua v. San Diego, notwithstanding that the Flanagan plaintiffs lack standing to challenge California's Open Carry bans, even if they were actually challenging the Open Carry bans, which they aren't.
I argued my appeal in February of 2018. My appeal is not technically stayed but there will not be a decision in my appeal until there is a decision in Young v. Hawaii, because Young was argued and taken under submission for a decision three days before I argued my appeal. Under this circuit's judge-made law, the Young decision will be binding on my three-judge panel.https://youtu.be/hmrfyYBdA-E