Protect Your Patents
A patent is a valuable piece of commercial property that helps prevent your competitors from copying your invention. At Italia IP, we can help you at every step of the way towards obtaining one.
Patent Services
A patent is a valuable piece of commercial property that helps prevent your competitors from copying your invention. Italia IP can help you at every step of the way towards obtaining one.
Whatever your patent needs, Italia IP can help, whether it's:
Patent Drafting Strategy
A new patent drafting strategy in recent years in the U.S. Court of Appeals for the Federal Circuit has issued a number of opinions that benefit the would-be copyists by limiting a patentee's ability to enforce his or her patent rights through the use of, "the doctrine of equivalents."
Doctrine of Equivalents
Doctrine of Equivalents
The doctrine of equivalents (DOE) is used by a patentee when a competitor's product is not literally the same, but nonetheless, is "close enough" that it infringes because it is equivalent. This is an extremely valuable tool in a patentee's arsenal against competitors because it is rare that a competitor's product is literally described in a patentee's issued patent.
Equivalent to Invention
Equivalent to Invention
It is substantially more frequent that the competitor has "tweaked" its product such that it is not literally the same from a technical perspective, but nevertheless, it performs and is equivalent to the invention described (claimed) in an issued patent.
Prosecution History Estoppel
Prosecution History Estoppel
A patentee loses its right to use the DOE to ensnare an infringer when, during communication with the United States Patent and Trademark Office (patent prosecution), a patent attorney must amend (or merely argue) a claim limitation to get the patent issued in light of what is previously known (prior art). This cutting off of the DOE is termed "prosecution history estoppel" (PHE).
A New Patent Drafting Strategy
With Italia IP, drafting a new patent is easy. We have a proven strategy to help your intellectual property get patents. Here are a couple simple examples relating to a car to illustrate the dramatic effect PHE has on limiting a patentee's rights.
A patent attorney drafts and files an application with the following original claim.
Claim 1
The claim is with regard to a car comprising a body, a suspension, and a gasoline engine. Let's assume that the patent issues without amendment. In this circumstance a patentee would be able to successfully sue a would-be copyist for literal patent infringement for producing a car with a gasoline engine (assuming the car also had a body and suspension).
DOE
In addition, because there was no amendment to the claim during prosecution, no PHE would apply. Thus, the patentee would also be able to successfully sue under the DOE a competitor that produced a car with a diesel or alcohol powered engine - assuming that diesel and alcohol engines are equivalent to gasoline engines. The end result is that the patentee would have broad patent protection because the DOE was available to expand the claim beyond its literal scope.
Now take the example of a patent attorney who drafts an even broader original claim by removing the limitation that the engine is gasoline powered.
Claim 1
Let's assume that a car comprising a body, a suspension, and an engine. On its face, this is a broader claim because it literally covers every potential type of engine. However, now let us say that it is generally known that there are various types engines available to be used in cars and that the PTO rejects the claim because the engine limitation is too broad. In response to the office action, the patent attorney amends Claim 1 to include the gasoline limitation. The claim is allowed and the patent issues with the following claim.
Amendment During Prosecution
Claim 1. A car comprising: a body; a suspension; and a gasoline engine.
This is the same claim as in the patent in Example 1, but because of the amendment during prosecution, PHE now applies. The patentee would still be able to successfully sue under literal infringement the competitors that produce a car with a gasoline engine.
However, more importantly, because the claim was amended, PHE would cut-off the patentee's ability to successfully sue under the DOE competitors that produce cars with diesel or alcohol powered engines. Thus, the application that was originally drafted with a broader claim, has been dramatically narrowed because of the amendment and resulting PHE.
Just a few years ago, Example 2 was the accepted strategy for drafting a patent application. The strategy was essentially to draft the claims as broadly as possible and then fight it out with the Patent Office and eventually narrow the claims through amendments during prosecution until the claims were sufficiently narrow for the examiner to accept them.
This was a good strategy because there were no ramifications, i.e. no PHE. However in 2000, the Federal Circuit held in Festo Corp. v. Shoketsu Kinzoku Kogyo Kabushiki Co. that any narrowing amendment made to a claim element for purposes of patentability completely bars any resort to the DOE with respect to the amended limitation. After Festo, the old drafting strategy was dead, or at least it should be. At Italia IP, it is.
Example 1 illustrates the new patent strategy utilized by Italia IP. The strategy is to draft patent applications that seek protection, given what is known in the prior art, only as broad as the applicant is rightfully allowed. This requires a patent attorney to conduct a more thorough search of the prior art before drafting the application. This new strategy effectively reduces the amount and nature of the amendments to the claims during prosecution. This preserves a patentee's ability to utilize the DOE to broaden its claims to ensnare or ward off would-be infringers.
It cannot be stressed enough how important it is for a patent attorney to recognize and adapt to these new precedents. Failure to do so leaves a would-be patentee with a patent that is far too narrow to be truly effective. Italia IP is experienced in drafting applications utilizing this new strategy and has formulated additional drafting techniques that help swing the pendulum back in the patentee's favor.