Conversely, the publication of a copyrighted work under a changed title, with the original notice of copyright, would probably not invalidate the copyright, though it would make identification more difficult and prevent the copyright certificate being _prima facie_ proof; and change of title is a practice altogether reprehensible. A new copyright of the same book changed only in title, with a new copyright notice of later date, could scarcely be construed as a new edition and in the absence of the original copyright notice the copyright might thus be abandoned or forfeited and the work be dedicated to the public.
General titles cannot in any way be protected. The publishers of the "_Bibliographie Universelle_," in France, the "Post Office Directory," in England, and of "Irving's Works," in America, were all defeated in attempts to prevent the use of those titles.
Titles are rather to be considered as trade-marks, which may be registered in the United States under the Trade-Mark acts of 1905-6, and protected by the statutory penalties, or may be protected on general principles of equity. This doctrine was early upheld by the English courts, especially in regard to periodicals, as in the titles of _Bell's Life_ and the _London Journal_, and again came before the courts in the important case of Weldon _v._ Dicks, as to the specific title of the novel "Trial and triumph," in which case, in 1878, Vice-Chancellor Malins enjoined quite another book under the same title, though the title was chosen in ignorance of the first book and in entire good faith. So, also, as to the title "Splendid misery," used by Miss Braddon in 1879, Sir James Bacon, in the Chancery suit of Dicks _v._ Yates, in 1881, was inclined to support the claim of C. H. Hazelwood, who had used the title in 1874, until it was shown that a forgotten novelist named Purr had used it in 1801, so that it had become, in a measure, common property.
In the several American "Chatterbox" cases, Judge Wheeler's early decision restraining the use of this "name or word, or any name or word substantially identical therewith," in or upon any juveniles of the general character of the English book of that name, was followed by Judge Shipman, in 1887, in Estes _v._ Worthington, in the U. S. Circuit Court in New York, who also held that the word "Chatterbox" had become "a well-known trade-mark designating a well-known series," published in a distinctive style and enjoined the rival publication, simulating the external style, but of different contents. These decisions previous to 1891, resting on principles of trade-mark and not of copyright, indirectly assured a measure of international copyright.