About Us

We are experienced IP and innovation advisors, with a creative and strategic approach focused on delivering practical outcomes tailored to meet client needs

Our Vision

To reimagine the sustainable value of intellectual property

Our Purpose

To be passionate advocates for the role of intellectual property as a business tool to unlock value

Our Values

People Matter – client centric, collaborative & fair
Finding Joy – dynamic & passionately engaged
The Real Deal – transparent, authentic & with integrity
Forward Focused – courageous, adaptive, innovative & proactive

The Way We Work

We are respectful, considerate, inclusive and authentic, valuing differences and encouraging diversity

We act with honesty and integrity, in the best interests of ipervescence and our clients and within the law

We don’t tolerate any conduct that discriminates, bullies or harasses someone

We understand that maintaining client confidentiality and addressing actual and perceived conflicts of interest is paramount and a critical part of our service delivery

We strive to find innovative and sustainable ways to work and to meet the needs of our clients

We use technology appropriately and communicate responsibly

We are committed to being ethical and transparent in the way we engage with others, our community and the environment

Our Company

ipervescence is a joint venture between the Managing Principals and QANTM Intellectual Property Limited

Community & Environment

We are committed to being ethical and transparent in the way we engage with our community and the environment



We are committed to:

  • volunteering one day each year in our community
  • exploring pro bono opportunities
  • engaging in charitable giving and in-kind contributions

Diversity & Inclusion

Diversity & Inclusion

We are committed to:

  • encouraging, supporting and celebrating differences
  • valuing and respecting the people we work with
  • championing flexible and innovative ways of working



We are committed to:

  • using technology and creativity to minimise our impact on the environment
  • reducing, reusing and recycling
  • making cleaner energy choices

Our recent Community & Environment projects include:

  • Fitted for Work – We dropped off some great outfits to the Fitted for Work Melbourne Dressing Room, to assist women experiencing disadvantage

Our Team

Karen Hallenstein – Managing Principal

Karen is a dynamic leader, specialising in driving positive change and innovation through thought leadership and strategic thinking.  She leverages her expert knowledge to deliver commercial and customer focused outcomes.

Karen is a specialist in IP, with a Masters degree in IP and 18 years’ experience as IP in-house counsel at Telstra.  She was also the leader of legal teams supporting Telstra’s big data and procurement business operations.

Karen is a highly engaging and dedicated business advisor, and champion of flexible career pathways for IP professionals.  She brings an enthusiastic and positive approach to drive practical outcomes tailored to clients’ needs.

Jane Perrier – Managing Principal

Jane is a highly skilled and respected commercial IP and innovation advisor with a collaborative and strategic approach.  She’s a passionate advocate of the role of IP in stimulating ideas, growth and adaptive change.

Before co-founding ipervescence, Jane spent over 20 years leading Telstra’s global IP Team.  She has extensive experience managing, exploiting and enforcing IP, including developing commercial strategies for dealing with IP and engaging with IP policy and law reform.  Jane’s team was also responsible for advising Telstra’s CTO on a range of innovation and technology issues.

Jane was an appointee and consultant to the federal government’s former Advisory Council on Intellectual Property, and is currently a member of the Law Council of Australia’s IP Committee.