Laktaw v. Paglinawan
[44 Phil. 855 (1918)]

A person who published a Spanish-Tagalog dictionary and copied the equivalents, definitions and different meanings given in another author's Spanish-Tagalog dictionary, although making some additions of his own and some unimportant changes in the examples to illustrate the meanings of the words, has merely reproduced the dictionary of the other author in violation of the Law on Intellectual Property.