At the IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization taking place in Monteral, Canada, we presented our work titled „Estimation of Electric Conductivity of Copper Foils Using Full-Wave Simulation Based on 3D FEM and Shape Deformation.” This research explores advanced methods for accurately estimating the electric conductivity of copper foils, leveraging full-wave simulations combined with 3D finite element modeling (FEM) and shape deformation techniques. The work is a part of a project supported under the Eureka/Eurostars program, as part of the contract InnovativeSMEs/4/90/5G_Foil/2023.