  We address existence of global solutions to the derivative nonlinear
Schr\"{o}dinger (DNLS) equation without the small-norm assumption. By using the
inverse scattering transform method without eigenvalues and resonances, we
construct a unique global solution in $H^2(\mathbb{R}) \cap
H^{1,1}(\mathbb{R})$ which is also Lipschitz continuous with respect to the
initial data. Compared to the existing literature on the spectral problem for
the DNLS equation, the corresponding Riemann--Hilbert problem is defined in the
complex plane with the jump on the real line.
