Cassels-llp located at www.cassels-llp.com appears to be a fake Cassels Brock & Blackwell LLP website. The legitimate Cassels Brock & Blackwell LLP, a Canadian law firm, is located at www.cassels.com. Cassels-llp.com was registered 18 days ago and was registered by someone in Panama, instead of Canada.
The Fake Cassels Brock & Blackwell LLP Canadian Law Firm Website

40 KING ST W SUITE 2100, TORONTO, ON M5H 4A9
Tel: (416) 907 8367
Also, whoever registered cassels-llp.com is using third party service to hide the domain registration information.
Cassels-llp Domain Registration
Domain name: cassels-llp.com
Registry Domain ID: 2451215412_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.namecheap.com
Registrar URL: http://www.namecheap.com
Creation Date: 2019-11-03T22:55:25.00Z
Registrar Registration Expiration Date: 2020-11-03T22:55:25.00Z
Registrar: NAMECHEAP INC
Registrar IANA ID: 1068
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone: +1.6613102107
Reseller: NAMECHEAP INC
Registry Registrant ID:
Registrant Name: WhoisGuard Protected
Registrant Organization: WhoisGuard, Inc.
Registrant Street: P.O. Box 0823-03411
Registrant City: Panama
Registrant State/Province: Panama
Registrant Postal Code:
Registrant Country: PA
Registrant Phone: +507.8365503
Registrant Phone Ext:
Registrant Fax: +51.17057182
Registrant Fax Ext:
Registrant Email: