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In the law of Patents, the presence of two pending applications, or an existing patent and a pending application that encompass an identical invention or discovery.

When interference exists, the Patent and Trademark Office conducts an investigation to ascertain the priority of invention between the conflicting applications, or the application and the patent. A patent is customarily granted to the earlier invention.


noun antagonism, antipathy, bar, barrier, censure, check, collision, conflict, contravention, damper, disapproval, disturbance, encumbrance, fetter, frustration, hindrance, impediment, imposition, interception, intercession, intermediacy, interruption, intervention, intrusion, invasion, meddling, nuisance, obstruction, onus, opposition, resistance, restraint, setback, stricture, stumbling block
Associated concepts: contempt, frustration of contract, interrerence with contractual relations
See also: bar, barrier, burden, check, collision, conflict, damper, deterrence, deterrent, disadvantage, dispute, embargo, encroachment, encumbrance, fetter, filibuster, frustration, handicap, hiatus, hindrance, impediment, imposition, infringement, intercession, interruption, intervention, intrusion, invasion, mediation, molestation, nuisance, obstruction, onus, opposition, prohibition, resistance, restraint, veto
References in periodicals archive ?
The optical phase modulators are integrated into the laser frequency control and servo system of the laser ranging interferometer, which is used in the metrology instrumentation of the two satellites.
Year 2: Design of flexures and initial x-ray interferometers with flexures
To utilize this measured data as a seismic signal, we compensate the error to improve the interferometer's accuracy [8].
Since it is possible to put optical components very close to each other, the air dead path error of the laser interferometer is also negligible.
In the experiment, the HC-1550 is used as a measuring arm of a Mach-Zehnder interferometer and the conventional SMF-28 is used as an isolated reference arm.
If, however, a gravitational wave arrives, it disturbs spacetime, stretching and squashing it, and causing the arms of the interferometer alternately to lengthen and shorten.
Regular interferometers separate light waves onto paths of different lengths and then recombine them, creating an interference pattern of alternating bright and dark fringes that moves whenever the path lengths change.
2 PRINCIPLE AND STRUCTURE OF THE SENSOR 2.1 Principle of the Fabry-Perot interferometer
Mavalvala worked with researchers at the US-based underground detectors Laser Interferometer Gravitational-wave Observatory (LIGO) Laboratory to build sophisticated sensors to detect gravitational ripples created from the collision of two black holes some 1.3 billion years ago and had been hurtling through space to reach Earth on September 14, 2015.
It takes a very sensitive interferometer to detect them, which is what makes LIGO amazing.
Similarly, the Michelson-Morley interferometer measurements Cahill refers to in [1] were not developed to measure the speed of light, c, but to measure relative motion, v to a postulated luminiferous ether.
Again the gates are divided according to the interferometer techniques such as ultra-high nonlinear interferometer (UNI), sagnac interferometer (SI), Michelson interferometer (MI), Mach-Zehnder interferometer (MZI), and delay interferometer (DI) to implement the nonlinearity in SOA.