Although considered a violation of copyright or trademark law, non-commercial fan fictions are considered tie-ins because they promote visibility of the original work, but may not have received permission of the publishing companies or the author.
Common tie-in products include:
Tie-ins are considered an important part of the revenue-stream for any major media release, and planning, and licensing for such works often begins at the very earliest stages of creating such a property. Tie-ins provide both an important way of generating additional income from a property, and a way of satisfying the desires of fans who enthusiastically support a popular media property.
The lineage of tie-in works can be quite convoluted. For example, a novelization might be done of a computer game, which was based on a television show, based on a movie, based on a comic book which was the original media property. In several cases, a novelization has been released based on a movie which was in turn adapted from an original novel. In such cases, it is not uncommon to see the novelization and a movie release of the original novel side-by-side on the same shelf.
Mechanical evaluation of external skeletal fixator-intramedullary pin tie-in configurations applied to cadaveral humeri from red-tailed hawks (Buteo jamaicensis).(Original Studies)(Report)
Dec 01, 2009; Abstract. Use of external skeletal fixator-intramedullary pin (ESF-IM) Tie-in fixators is an adjustable and effective...
Mechanical evaluation of various external skeletal fixator-intramedullary pin tie-in configurations using a tubular plastic bone model.(Original Studies)(Report)
Dec 01, 2009; Abstract: Use of external skeletal fixator-intramedullary pin Tie-in (ESF-IM pin Tie-in) fixators is an adjustable...