Cobra Fangs VS Ponticulus

Question:

When damage is dealt (and not prevented/dodged) to a minion that is immune to that damage, is the damage considered "successfully inflicted" for the purposes of Cobra Fangs?

Scenario:
Vampire A strikes inferior Cobra Fangs for one regular (non-agg) damage vs Ponticulus, who strikes hands for zero. No presses, combat ends, then action ends.

Does Ponticulus burn?

As strange as it may seem, I think the answer might be yes, just as we would remove counters from a Weighted Walking Stick strike against Ponticulus (correct me if I'm wrong about that!), but I feel I need to ask since I imagine someone might object.

Thanks much,
-Billy

Name: Cobra Fangs
[LotN:R]
Cardtype: Combat
Cost: 1 blood
Discipline: Serpentis
[ser] Strike: hand strike (at strength damage). If any damage from this strike is successfully inflicted on an opposing ally, burn that ally at the end of the action.
[SER] As above, and if any damage from this strike is successfully inflicted on an opposing vampire, that vampire goes to torpor during his or her next unlock phase.
Artist: Mike Chaney

Name: Ponticulus
[KoT:R/B1]
Cardtype: Ally
Clan: Tremere
Cost: 2 pool
Unique wraith with 1 life. 0 strength, 0 bleed.
Ponticulus gets +1 intercept during actions against you. He can lock to give any Tremere +1 intercept. He is immune to non-aggravated damage. He cannot act and he cannot have or use equipment.
Artist: Brian LeBlanc