A court’s decision to grant a motion for summary judgment can usually be appealed. The one caveat is that you generally will need to wait until the court has entered a final judgment to appeal. This means that if summary judgment was granted in full, then you can appeal immediately following the court’s decision; however, if summary judgment was granted in part, then you’ll generally need to wait until all the claims are litigated and resolved at trial before you can appeal.
For the same reason, a court’s decision denying a motion for summary judgment is usually not immediately appealable. This is because the order is not a final judgment, given that all claims will still need to be resolved at trial.