Arkema and Honeywell agree to dismiss one claim

 By Jim Taylor, Editor MACS ACtion Magazine

On February 9th, Arkema and Honeywell jointly agreed to dismiss all pending claims and counterclaims about one specific item in their ongoing legal battle over patents relative to HFO-1234yf.

In June of 2010 Arkema, Inc. and Arkema France filed suit against Honeywell International, Inc. in United States District Court. Honeywell countersued to prevent Arkema from producing the chemical.
Arkema asked the federal court to declare Honeywell’s U.S. patents on the chemical invalid because similar work was disclosed and patented earlier in Japan and Russia. The patents in question are 7,534,366 (2009) and 7,279,451 (2007), referred to respectively as the “366” and “451” patents.

In the recent agreement, accepted by both companies and the court, the parties agreed to step back from the ‘451 patent dispute because that patent is now under review by the U.S. Patent and Trademark Office.

Judge William H. Yohn, Jr, noted that “it is not currently known what the scope will be of the claims of the ‘451 patent that issue following the reexamination.”

The court document makes no mention of the ‘361 patent, so the remaining portions of the case continue. A trial date is set for June of this year.

Many believe that this dispute is one roadblock to production of the new refrigerant and its supply to the European market which requires its use in new vehicles.


The Mobile Air Conditioning Society’s blog has been honored as the best business to business blog in the Automotive Aftermarket by the Automotive Communications Awards and the Car Care Council Women’s Board!

When having your mobile A/C system professionally serviced, insist on proper repair procedures and quality replacement parts. Insist on recovery and recycling so that refrigerant can be reused and not released into the atmosphere.

If you’re a service professional and not a MACS member yet, you should be, click here for more information.

You can E-mail us at or visit to find a Mobile Air Conditioning Society member repair shop in your area. Visit to find out more about your car’s mobile A/C and engine cooling system.

The 33rd annual Mobile Air Conditioning Society (MACS) Worldwide Training Conference and Trade Show, Be the Best of the Best will take place February 7-9, 2013 at the Caribe Royale, Orlando, FL.


About macsworldwide

Mobile Air Conditioning Society (MACS) Worldwide Founded in 1981, MACS is the leading non-profit trade association for the mobile air conditioning, heating and engine cooling system segment of the automotive aftermarket. Since 1991, MACS has assisted more than 600,000 technicians to comply with the 1990 U.S. EPA Clean Air Act requirements for certification in refrigerant recovery and recycling to protect the environment. The Mobile Air Conditioning Society (MACS) Worldwide’s mission is clear and focused--as the recognized global authority on mobile air conditioning and heat transfer industry issues.
This entry was posted in Uncategorized. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s