In gaming, a "patch" is an update released by the developer to fix bugs, glitches, exploits, or to rebalance gameplay. When the community says "Ben Gwen Sleepless Nights was patched," it means the original version of that fight/song contained unintended issues or unfair advantages that have since been corrected.
While Sleepless Nights is a fan creation, it’s interesting to see how it mirrors or plays off official elements from the Ben 10 franchise. The official series itself has moments that fan creators often cite as "fuel" for their works: ben gwen sleepless nights patched