Question: Chivas 1-2-3 changed its name to Sorcerer on the Rocks to prevent legal fight with which blended Scotch whisky that is part of Pernod Ricard?

Context paragraphs:
Royal Salute (whisky): Royal Salute is a brand of Scotch whisky produced by Chivas Brothers (owned by Pernod Ricard), founded in 1801 in Aberdeen, Scotland.  The Royal Salute brand's home is Strathisla Distillery at Keith, Moray in Speyside, Scotland.  It was launched on 2 June 1953 by Chivas Brothers in tribute to Queen Elizabeth II on the day of her coronation.  Named after the traditional 21-gun salute, Royal Salute whisky is aged for a minimum of 21 years.

White Horse (whisky): White Horse Scotch Whisky is a blended Scotch whisky from Edinburgh, first produced by James Logan Mackie in 1861.  In 2006, White Horse won blended whisky of the year in Murray's 2007 Whisky Bible.

Sorcerer on the Rocks: Sorcerer on the Rocks (妖術者 オンザロック , Mahotsukai on za Rokkus ) also known as Chivas 1-2-3 (シーバス１-２-３ , Chivas 1-2-3 ) is a spin-off of "Sorcerer Hunters".  The name was changed from Chivas 1-2-3 because ADV Films didn't want to get into a legal fight with the Whiskey company of the same name.  So, the name of the OVAs and the first name of the hero were changed for the English Dub.  The original story is by Satoru Akahori and Miku Yuki, and was published in Media Works' "Monthly Dengeki Comic Gao!"

Passport Scotch: Passport Scotch, also called Passport Blended Scotch Whisky, is a brand of whisky exported from Scotland by Seagram Distillers, PLC, and currently owned by Pernod Ricard.  According to "Classic Blended Scotch" by Jim Murray, Passport is a blend of more flavored highland malts with lighter and sweet lowland whiskies, made at Seagram's Speyside distilleries.  The particular blend used in Passport Scotch was first produced in the 1960s by master blender Jimmy Lang, of Seagram’s Scottish subsidiary Chivas Brothers, and started being sold in 1965.  The blend recipe for Passport was developed by Chivas Brothers’ blender Jimmy Lang during the 1960s.  It sold 1.7 million bottles in 2015, being a strong performer in Brazil (where it is second on the Scotch whisky market), Angola, Mexico, Spain, Portugal and Poland.

Glen Grant distillery: Glen Grant is a distillery founded in 1840 in Rothes, Speyside, that produces single malt Scotch whisky.  Previously owned by "Chivas Brothers Ltd", best known for their Chivas Regal blended scotch whisky, Glen Grant was purchased by the Italian company Campari Group in December 2005.  It is the biggest selling single malt Scotch whisky in Italy.

Chivas Regal: Chivas Regal is a blended Scotch whisky produced by Chivas Brothers, which is part of Pernod Ricard.  Chivas Regal traces its roots back to 1801.  Chivas Regal's home is Strathisla distillery at Keith, Moray in Speyside, Scotland, the oldest operating Highland distillery, which was founded in 1786.

Dewar's: Dewar's ( ) is a brand of blended Scotch whisky owned by Bacardi, which claims the brand's "White Label" to be the top-selling blended Scotch in the US.  Dewar’s is also the world’s most awarded blended Scotch whisky with more than 500 medals earned in international competitions.

Black Dog Scotch Whisky: Black Dog is a brand of Scotch Whisky that is distilled, aged and blended in Scotland, and bottled and marketed in India by United Spirits Limited (USL), a subsidiary of Diageo PLC.  In 2013, Black Dog was reported to be the world's fastest growing Scotch Whisky by volume, according to International Wine and Spirits Research (IWSR).  The whiskies used in the blend come from Scotland.  Black Dog Scotch Whisky sold in India is bottled in Parmori District Nasik in Maharashtra, by importing the undiluted spirits from Scotland, a strategy that avoids the import duties imposed on liquor imports to India that are bottled prior to import.  (Import duties may be as high as 150% for liquor bottled prior to import, but only about 30% when bottled in India.)  The brand's main competitors outside the Diageo family are Ballantine’s 12 YO Finest Blended Scotch, 100 Pipers 12 YO Blended Scotch, both owned by Pernod Ricard and two expressions from the Teachers' family, Teacher’s 50, a premium 12 year old Scotch whisky, blended and matured in Scotland but bottled in India starting August 1997 to celebrate India’s 50 years of independence and Teacher's Highland Cream, both owned by Beam Suntory.

100 Pipers: 100 Pipers is a brand of "standard" blended Scotch whisky with smoked notes that is produced by Pernod Ricard.  The company says it is the "seventh-largest blended Scotch worldwide", the "No. 2 standard whisky in Asia", and the "No. 1 standard whisky" in Thailand.  In addition to Thailand, it is also distributed in India, Spain, and South America.  100 Pipers is a blend of between 25 and 30 source whiskies.  Much of it comes from the Allt a'Bhainne distillery, which is also owned by Pernod Ricard and does not have its own bottling facilities.  100 Pipers is bottled in India and Scotland (and possibly elsewhere).

Thierry Jacquillat: Thierry Jacquillat (July 29, 1938 in Versailles, France – January 2010) was president of Paris-ile de France Capitale Economique and former number 2 of Pernod Ricard.  He started to work for the Pernod Fils company at the age of 25, and was secretary-general of the company at the time of its merger with the Ricard Group in 1974.  The merger was led by Jacquillat, who then held the position of Director General at Pernod Ricard until 2000.  “In his almost 40 years with Pernod Ricard, Thierry Jacquillat helped transform a French family-run business with 1,100 employees into one of the top world leaders in wines and spirits, with nearly 15,000 employees and a presence in nearly 100 countries”

Supporting paragraphs: Sorcerer on the Rocks Chivas Regal
Answer: Chivas Regal