Using the Etyres data.
Your tyre is 215 section, half the width is 107.5
Repairable width is 153, so half that is 76.5
107.5 - 76.5 = 31mm. So anything in the first 31mm from the edge is not legally repairable.
From this, it would appear that your repair is not legal to use on the road. Although as Caravadossi says, you need to measure out from the centre, not in from the edge.
Is your life worth this argument, or the cost of a tyre? If the patch lets go due to flexing, you could be upside down in a ditch, or bouncing off the oncoming truck. Bin it!