Key legal question
Whether the constitutional complaint was admissible despite available cantonal nullity review against alleged factual errors.
Extracted holding
The challenged factual criticisms could have been raised by cantonal nullity complaint, so the cantonal remedies were not exhausted.
Extracted reasoning
Under the applicable cantonal rules, the Handelsgericht judgment was still open to nullity review for manifestly incorrect or arbitrary factual findings; therefore the federal constitutional complaint was premature.