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Judge Davis: Claim construction opinion

In an ANDA patent infringement action involving generic versions of Travatan® and Travatan Z®, Judge Davis recently issued a claim construction decision construing disputed claim terms of U.S. Patent Nos. 5,631,281; 6,011,062; 6,503,497; and 6,849,253. Alcon Research Ltd. v. Barr Laboratories Inc., C.A. No. 09-318-LDD (D. Del. Sept. 6, 2011). The following terms were construed:

“borate-polyol complex”
“ophthalmically acceptable antimicrobial agent”
“to enhance the antimicrobial activity”
“aqueous ophthalmic composition”
“prostaglandin”
“enhance / enhancing the chemical stability”
“therapeutically-effective amount of prostaglandin”
“aqueous composition”


Alcon Research Ltd. v. Barr Laboratories Inc., C.A. No. 09-318-LDD (D. Del. Sept. 6, 2011).


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