With the adoption of Berne and its successor treaties, requiring formalities to obtain a copyright has fallen out of practice around the world.
However, the system of automatic copyright on fixation has been cited as one of the factors behind the growth of the so-called "orphan works" problem.
[2] Consequently, some scholars and policy advocates (such as law professor and activist Lawrence Lessig[3] and U.S. Representative Zoe Lofgren) have called for returning to a system of registration requirements and possibly other formalities such as copyright notice.
UC Berkeley's Law School held a conference in 2013 on the question of "Reform(aliz)ing Copyright for the Internet Age?
", noting that "Formalities, which in the past three decades have largely disappeared from American copyright law, may be about to stage a comeback.