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Author: stevehansen

Patent Preparation and Prosecution, Patents

Heading Off Obviousness Rejections

February 23, 2015February 23, 2015stevehansennon-obviousness, patentability, patents

Sometimes the best defense is a good offense. Clients often assume that they are entitled to a patent because no single piece of prior art shows all of their invention.  In that case the invention may be novel. However, it does not
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Claim Construction, Patent Invalidity, Patent Litigation

District Court Claim Construction Factual Findings Reviewable for “Clear Error”

January 26, 2015stevehansenclaim construction, extrinsic evidence, Indefiniteness, Patent litigation

The claims of a U.S. Patent define the scope of the patent holder’s right to exclude.  In its 1996 Markman decision, the U.S. Supreme Court held that disputes over the meaning of claim terms are an issue of law to be decided by a
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Invalidity, Patent Invalidity, Patentability

Software Patents Continue to Take a Beating in 2014

December 11, 2014December 11, 2014stevehansennon-practicing entities, NPEs, Statutory Subject Matter

This has not been a good year for software patents in the United States. Since the Supreme Court issued its decision in June in Alice Corp. v. CLS Bank, 134 S.Ct. 2347 (2014), the Patent Office has been aggressively rejecting software patent
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Patent Litigation

Pitfalls in Policing Your Patent Rights

October 20, 2014stevehansenequitable estoppel, laches, patent infringement defenses, Patent litigation

Patent holders are not obligated to police infringement or pursue infringers in order to keep their patents in force.  However, failing to address known acts of infringement can, in some cases, provide infringers with a defense called “laches” that can limit the
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Patent Invalidity, Patent Litigation

Procedural Mechanisms for Invalidating Patent Claims Due to Indefiniteness

September 16, 2014September 16, 2014stevehansenIndefiniteness, patent invalidity, Patent litigation

One of the defenses available to an accused infringer is that the asserted patent claims are invalid for indefiniteness.  The Patent Statute requires that the claims of a patent “particularly point[] out and distinctly claim[] the subject matter which the applicant regards
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Claim Construction, Invalidity

Invalidating Patent Claims For Failing to Include Required Aspects of an Invention

August 20, 2014stevehansenclaim construction, patent invalidity

In last month’s blog, we discussed the Federal Circuit’s decision in X2Y Attenuators, LLC. V. International Trade Commission, a case which demonstrated how limiting descriptions of an invention in a patent specification can be used to restrict the scope of otherwise facially
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Claim Construction, Patent Litigation

Federal Circuit’s X2Y Attenuators Decision Reinforces The Importance Of Drafting Patents For Litigation

July 15, 2014stevehansenclaim construction

On July 7, 2014, the Federal Circuit Court of Appeals issued an opinion in X2Y Attenuators, LLC v. International Trade Commission, which underscores the importance of carefully drafting patent applications with an eye toward litigation.  The decision also demonstrates why form often
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Patent Invalidity

Indefiniteness – Patent Claims Must “Inform Those Skilled in the Art With Reasonable Certainty” About the Scope of the Invention

June 24, 2014stevehansenIndefiniteness

In Nautilus, Inc. v. Biosig Instruments, Inc., the Supreme Court reversed the Federal Circuit’s holding that claims directed to a heart rate monitor were sufficiently definite to avoid invalidation and remanded the case to the Federal Circuit.  For a copy of the opinion,
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Patent Invalidity

Are Business Method Patents Dead? – Supreme Court Strikes Down Patent Claims Directed to Computerized Method of “Intermediated Settlement”

June 24, 2014stevehansenBusiness Methods, Statutory Subject Matter

If business method patents are not dead, after this month’s decision in Alice Corp. v. CLS Bank International, they are at least on life support. For a copy of the opinion, click here. In Alice Corp., the Supreme Court affirmed an en
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Patent Infringement

Inducement of Infringement Requires Proof of Direct Infringement

June 24, 2014stevehansenIndirect Infringement, Inducement of Infringement

In Limelight Networks, Inc. v. Akamai Technologies, Inc., (for a copy of the opinion, click here) the Supreme Court reversed the Federal Circuit’s holding that Limelight could be liable for actively inducing the infringement of Akamai’s patent claims even though, under the Federal Circuit’s governing standards, no
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Recent Posts

  • The USPTO’s Revised Guidelines for AI-Assisted Inventions Jeopardize the Validity of Patents Resulting from Heavy AI Involvement
    by stevehansen
    April 20, 2026
  • Federal Circuit Confirms: Improper Inventorship Can Invalidate a Patent Under the AIA
    by stevehansen
    April 20, 2026

Tag Cloud

Claim Construction (13) Infringement (13) Invalidity (26) Patentability (17) Patent Infringement (7) Patent Invalidity (15) Patent Litigation (41) Patent Preparation and Prosecution (36) Patents (44) Portfolio Development and Innovation (39) Reexamination and Post Grant Review (7)

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