you must use the manufacturing required items.
invention EIV is based on the T2 bpo manufacturing activity
copy EIV is based on the T1 bpo manufacturing activity
all the while with raw BP values.
in this case
copy EIV = (234 * estm(tritanium)+3413 * estm(pyerite) ) * 0.02
invent EIV = (estm(overdrive T1)+estim(ram armor/)+5 * estim(plasma thruster)+3 * estim(mech parts)+estim(morphite)) * 0.02