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Professional Details

Jonna D. Lothyan
Senior Associate
TEL 619-236-9600
FAX 619-236-9669
Jonna Lothyan endeavors to practice civility while aggressively defending her clients. She is not afraid of entering the proverbial arena, prepared to advocate tirelessly while remaining civil to obtain the best outcome for her clients.
Jonna is a member of our Products Liability and Warranty Practice Group. She has been practicing law since 2014. She has experience in every phase of litigation from pre-litigation negotiation through trial. Jonna also has a significant amount of post-trial and appellate experience, including in the California Supreme Court.
In addition to products liability and warranty, Jonna has experience litigating cases involving catastrophic personal injuries, professional liability, employment, inverse condemnation, medical negligence and business solutions. Prior to joining Wilson Turner Kosmo, Jonna worked on the appellate and trial team at a national defense law firm where she tried several cases resulting in either a defense verdict or favorable settlement. She has also prepared dozens of cases for trial before reaching a positive resolution on the courthouse steps. Jonna has also drafted, prepared and filed over two dozen appellate briefs in Appellate Courts throughout California.
Jonna has experience litigating product liability and warranty cases from inception to trial. She has tried and prepared for trial several warranty cases against well-known plaintiff firms in San Diego and Los Angeles County that resulted in favorable settlements before reaching a jury verdict. Jonna has litigated cases involving product liability and warranty claims against automobile manufacturers, sporting products, and medical devices.
Jonna’s appellate practice includes preparing all appellate documents and briefs in both state and federal appellate courts throughout California, including the Supreme Court. She has also prepared and filed over a dozen petitions for writs of mandate in the appellate courts. In addition, Jonna provides strategic advice to clients and trial counsel with respect to significant trial court motions and post-trial matters where an appellate challenge is anticipated.
Prior to passing the bar and during law school, Jonna was a legal secretary and law clerk with a defense firm where she drafted various appellate briefs and petitions for writ of mandate. As a law clerk, Jonna successfully obtained an alternative writ on an order denying a motion to quash service of a summons.
Affiliations
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Lawyer’s Club Anti-Human Trafficking Committee Outreach Coordinator, 2018-Present
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As the Outreach Coordinator, Jonna prepares monthly newsletters for the group and assists in organizing a Legislative Roundtable to discuss legislation involving human trafficking as well as planning other events.
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Honors and Recognition
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Named by San Diego Super Lawyers-Rising Star, 2022
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Included in The Best Lawyers in America "Ones to Watch" for Appellate Practice (2021 - 2023)
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“Top 40 Young Lawyer” Personal Injury Law Section–California, National Alliance of Women in Law (NAOWIL), 2019